Issue 53 - Heliops
Transcription
Issue 53 - Heliops
DELIVERING GLOBAL COVERAGE OF THE HELICOPTER INDUSTRY MAR/APR 2008 I ISSUE 53 contents M A R c h / A PR i l 2 0 0 8 I I S S U E 5 3 A Kamov Ka226 belonging to Russia’s State Transport Company, proudly carries the Russian Federation flag during a flypast in Moscow. 24 24 cover feature: russia’s patriarch Sergey Mikheev, a 70 year-old industry veteran is the long-serving Designer General of Kamov. In an exclusive interview ALEX MLADENOV reports on the views of this extraordinary man who continues to be one of the driving cover photo Dmitry Kazachkov forces behind the development within the Soviet/Russian civil rotorcraft industry. 36 tough day at the office For the crews of South Africa’s Surf Rescue service it’s 95% boredom and 5% pure adrenalin as they patrol the popular coastline, ready to save lives in difficult and often very risky operational conditions. Pilot MIKE REID reports on one of those 5% adrenalin days. 46 living the high life “Sorry we can’t fly today” is a rarely called-upon phrase for the lucky instructors and students at Sloane Helicopters’ 70 46 Mallorca base, where some 350 days are flyable. SARAH BOWEN drops into the small and picturesque 36 Balearic island and discovers some of the most outstanding yet demanding mountain flying she’s seen. 54 one or two? the great debate Find any bar where the pilots of different helicopter types congregate, and there is sure to be heated debate about the persistent question of the comparative safety of single vs twin engine helicopters… right till the very last beer. In a paper he has researched advising companies on their exposure, MARK OGDEN makes some interesting observations. 62 THE ANSAT – new kid on the block For the first time in the history of Russia’s helicopter industry, an established manufacturing facility has managed to independently design and certify an all-new type. ALEX MLADENOV reports on the Ansat from Kazan regular features columns From the Editor 3 eye on east europe 13 Industry update 5 flight dynamics 15 subscription Form personal profile 6 80 Helicopters – a machine apparently destined for major flight training 17 Law & order 19 safety 21 flight instruction 23 success in a wide market. 70 Under pressure No pilot likes to think of his machine becoming un-controllable during flight, but in recent years there has been a series of hydraulic system-related accidents involving the AS350 squirrel. PHIL CROUCHER examines and explains the system, providing some timely advice on the issues. Your mission. Our filter. Install before flight. no matter where you fly, you need AFs. AFS leads the industry with high-performance engine Inlet Barrier Filtration systems for commercial and military propulsion systems. Commercial systems include Bell 205, 206B, 206l‑1/3/4, and 407, mDHi mD 500, and mD 900/902, eurocopter As350, and AgustaWestland A119 helicopters. Military systems include oH‑58A/c/D Kiowa, UH‑1H Huey, AH/mH‑6J/m little Bird, UH‑60 Black Hawk, AH‑64 Apache, and cH‑47 chinook. Development systems include eurocopter ec‑130, Bell 429 and 430, and AgustaWestland AW139. From the deserts of Iraq to the forests of California, AFS systems are protecting engines, enhancing performance, reducing costs, and helping operators do what they do best. Insist on an AFS filter. install before flight. AerospAce FiltrAtion systems, inc. A Donaldson company 636-300-5200 fax 636-300-5205 www.AFsfilters.com from the editor H By Mark Ogden CEO Neville (Ned) Dawson Duis erit velestrud PUBLISHER Cathy Horton dolore ercilit EDITOR Mark Ogden It nonsed et delestio od tem deputy editorS quatet, quisis adionse quatin Sarah Bowen utpate dolesto consendreet Alexander Mladenov nonsed dolobor eetumsa sub editors ndipitNeil prat. Ut Leigh Rob Neil lum do ercin ut luptatum acincipsum US EDITORsnonsenit vullummy Greg Davis iurem Fitzgerald do odolobor Aaron am, sit irit iusci et erostrud erosto ea. legal EDITOR Robert Van de Vuurst safety editor Phil Croucher I TALIAN CORRESPONDENT Damiano Gualdoni scandinavian CORRESPONDENT Rickard Gilberg proofreader Barbara McIntosh PRINTING GEON eli Expo 2008 has come and gone. Another good show with a lot of new equipment on show including Eurocopter’s EC175 (mockup), Bell’s 429, and the one that had a lot of people intrigued – Sikorsky’s X2. For experienced show-goers, it is always interesting to see how the fortunes of the major companies vary from year-to-year. Sikorsky has been lately demonstrating a true commitment to innovation, investing in projects like the X2 – and it has a good feel about it. Eurocopter always presents with flair and its products are usually cutting edge; with billions of dollars in turnover and backorders it can afford to be! AgustaWestland can seem to do no wrong with the 109 and 139 ranges selling like hotcakes and infiltrating the market at nearly every level. Bell on the other hand – Well, from the certainly upbeat approach of just a couple of years ago, it just doesn’t seem to have the oomph of a company that is going to challenge Eurocopter. Certainly its 429 promises to be a good product, and I hope for Bell’s future in the civil market that it proves to be. As I said last time, there are some great people in that great company but they still have some catching up to do. At this year’s show, even with the 429 on display, Bell just didn’t sound, or look, like a winner. Now that Nick Lappos (ex-Sikorsky and ex-Gulfstream) has accepted the position of Senior Vice President at XworX, there should be some positive movement again in Bell’s activities. He has a big job in helping Bell realize its future; figuring out future customer needs, getting advanced systems and technology activities running, and rapid prototyping. It is a huge task and one at which it is hoped that Nick will succeed. The aftermarket sector is certainly alive. Canadian company Heli Lynx and its FX version of the AS350, for example, seem to be taking off all around the world. Using new as well as tried-and-true technology, it puts surprising new life into a product that has a long lineage. Soloy has done something similar for some time now and while OEMs can’t produce enough aircraft for the market, there is a significant need for these products. Additionally, by developing alternative engine installations for example, it gives operators a chance to explore alternative support packages – something essential in an industry stretching at the seams. It is interesting that while fuel is a big cost factor in helicopter operations, it is the oil industry that seems to provide much of the powerhouse for the helicopter industry. With oil charging towards US$120 a barrel, without something short of a significant recession, the demand on the industry is unlikely to ease a lot. Modifications such as the Soloy and FX conversions, which provide greater fuel economy while giving more power where it’s needed, need to be looked at closely by both operators and customers. What was good to see at the US show was the Eastern European contingent. There have been some big culture shocks for the Russian industry in its attempts to get its product in widespread western use. When you read stories about the Russian builders and see their plans in this issue, it seems that they have been strangled for development funds for some time, and some of the “teaming” arrangements with western manufacturers have not always gone well. But now, there is consolidation in the Russian industry and they are finding the money to do some significant development. Although they seem focused on providing for domestic needs at the moment, it will be interesting to see how their industry develops in the near future and whether they can make a significant impact on the world market. The first-ever Heli Russia is being held in Moscow in early May. HeliOps will be attending and we will have full coverage of the highlights of this showpiece of one of the world’s fast-growing helicopter markets. We hope you enjoy this issue. Safe flying! n EDITORIAL ADDRESS Oceania Group Intl PO Box 37 978, Parnell Auckland, New Zealand PHONE: + 64 21 757 747 FAX: + 64 9 528 3172 EMAIL [email protected] WEBSITE www.heliopsmag.com 3 BEST INVENTIONS EVER Remote Controls Integrated Circuits DART Round-I-Beam Skidtubes (10 times easier) (10 times smaller) (10 times stronger than conventional skidtubes) Innovation is what sets DART apart. DART has 1,500 helicopter parts and accessories designed to make your operation more efficient and effective — with more being certified all the time. Our patented Round-I-Beam skidtubes increase resistance to damage and corrosion – plus they’re quick and easy to install. Innovation to make flying easier. Just what you’d expect from the helicopter accessory experts. DART. darthelicopterservices.com • phone 1.800.556.4166 or 1.613.632.3336 industry update NEW COMPONENT REPAIR CATALOG FOR DALLAS AIRMOTIVE BBA Aviation Engine Repair and Overhaul company, Dallas Airmotive, has published its 2008 RR250 Component Repair Catalog. Over the past twelve months the company has experienced a pickup in demand from local offshore helicopter operators as well as contracts with air medical service companies, according to President and CEO, Hugh McElroy. Its facilities are equipped to handle virtually all repair and overhaul tasks for Rolls Royce 250 engines including in-house test cells at both its Premier Turbines and H+S Aviation overhaul facilities. Bell 407 to provide Air Medical transport to Amarillo area As of April, a Bell 407 will be used by Northwest Texas Healthcare System (NWTHS) based in Amarillo, Texas to provide an air medical transport service for the region. The service will be operated in a partnership with Med-Trans Corporation, a leading provider of air ambulance programs. Bristow Wins Five-Year Seven-Helicopter Contract Bristow has been awarded a five-year contract for five medium and two small helicopters by a major customer in Mexico. Total revenue over the term of the contract is estimated at $US90m. Additionally, they have also signed a threeyear contract to lease and operate eight medium helicopters for the Comision Federal de Electricidad (CFE), the national power supplier of Mexico, with a total estimated revenue of $US70m. 2 0 0 8 F E B / M A R THE MAGAZINE FOR THE CIVIL HELICOPTER INDUSTRY I S S U E 52 I N T E R N A T I O N A L The first word on new products, new deliveries and happenings in the global civil helicopter industry. UNITED ROTORCRAFT SOLUTIONS SPECIALIZING IN: CUSTOMIZED COMPLETIONS & MODIFICATION • AIR MEDICAL • LAW ENFORCEMENT • CORPORATE FULL REFURBISHMENTS MAINTENANCE STC’D NVG LIGHTING PAINT & INTERIOR FULL MACHINE SHOP 351 Airport Road - Box 10 • Decatur, Texas 76234 • 940-627-0626 • www.unitedrotorcraft.com • FAA REPAIR STATION UX9R241Y industry update Attention Helicopter Operators ACROHELIPRO Global Services renamed to Vector Aerospace - Helicopter Services North America Effective February 24th, 2008, ACROHELIPRO Global Services adopted the name of our parent company and is operating as Vector Aerospace - Helicopter Services North America. We now conduct business from our Canadian facilities as Vector Aerospace Helicopter Services Inc. and from our US facilities as Vector Aerospace Helicopter Services USA Inc. To facilitate the public transition to Vector Aerospace - Helicopter Services North America, we have changed the name and logos of our operating companies in both Canada and the United States from the existing ACROHELIPRO entities to Vector Aerospace. This announcement sets in motion the first phase of a Vector-wide initiative to transition all aerospace maintenance, repair, and overhaul assets to the Vector brand, including ACROHELIPRO, Atlantic Turbines, Sigma Aerospace and the newly-acquired Defence Aviation Repair Agency (DARA) Rotary and Components divisions. We anticipate that as a result of efficiencies resulting from a consolidation of resources, knowledge and skills, customers will experience enhanced levels of quality, service and satisfaction. We also wish to emphasize this change will not affect our ability to provide the industry-leading services and products operators have come to expect from all Vector companies. Additionally, we will continue to provide our world class services in all our traditional product lines including Rolls Royce, Pratt & Whitney, General Electric and Turbomeca engines & associated accessories, Bell, Sikorsky and Eurocopter dynamic components, avionics and structures. If you have any questions relating to this notification, please contact any Vector Aerospace Helicopter Services Sales Manager or Customer Service Representative at your earliest convenience. Contact information can be found at www.vectoraerospace.com. We look forward to continuing our work in providing best-in-class helicopter maintenance, repair and overhaul services to operators across the globe. Sincerely, John MacDougall, President Vector Aerospace-Helicopter Services North America Vector Aerospace - Helicopter Services Toll Free: 1.888.729.2276 | Tel. 604.276.7600 | Fax. 604.276.7675 4551 Agar Drive, Richmond, British Columbia Canada V7B 1A4 WWW.VECTORAEROSPACE.COM 7 industry update Mi-171 Receives Type Acceptance Certificate in Mongolia Mission record for DRF team Air rescue alliance TEAM DRF was alerted to more missions than ever before during 2007. The number rose to 39,111 missions – 2,612 or 7.2 % more than the previous year. The most frequent reasons for missions were life-threatening illnesses like heart attacks or strokes. More than 120 dispatch centers in Germany have so far been equipped with the flight following-system “Rescue Track” which makes it possible for the first time to verify a helicopter’s position and mission status at a glance at all times. TEAM DRF partners currently operate 43 HEMS bases with more than 50 helicopters for emergency rescue and intensive care transportations between hospitals. The Mongolian Civil Aviation Department has awarded an Acceptance Certificate for the Mi-171 helicopter of Ulan-Ude Aviation Plant’s (UUAP) production. The Certificate licenses UUAP to deliver the Mi-171s to operators in Mongolia. The Mi-171 is one of the few pieces of Russian aircraft engineering that has received recognition from aviation authorities from several foreign countries all at once. First Two “Versace” AgustaWestland Helicopters Delivered AgustaWestland’s first two helicopters fitted with Versace-styled interiors have been delivered to their customers during an official ceremony held at its Vergiate plant. The 109 Grand, featuring a black-and-white interior and paint scheme and an AW109 Power, with a grey-coloured Versace-styled interior, was ordered by Ioan Tiriac Air of Romania and Elimarca of Italy. AgustaWestland and Versace first announced their collaboration in 2007, in order to offer customers a range of exclusively designed cabin interiors. The team further strengthened their collaboration in February, adding the AW139 to their range of most luxurious and stylish helicopter interiors. Your Bell. Our Windows. Perfect Fit. Aircraft AOG? Need windows? Tech-Tool Plastics has long-life, perfect-fit replacement windows in stock for most Bell helicopters. Your helicopter will be back in the air working for you like it should be. Tech-Tool Plastics, Inc. 7800 Skyline Park Drive Fort Worth, TX 76108 USA 1-800-433-2210 1-817-246-4694 Fax: 1-817-246-7402 [email protected] www.tech-tool.com 9 industry update Spectrum takes order for new Nova 880 wire marking system Spectrum Technologies’ first order for their brand new Nova 880 ultra-high speed wire marking system has been received from Sikorsky. The UV laser wire mark, measure and cut system is Spectrum’s latest innovation and joins the existing range of products as the new top of the range system. Launched last October, the system was officially unveiled on the opening day of the Productronica show in Munich, Germany, and input from key customers, including Sikorsky, was sought during the initial design. Sikorsky specified their unit to include a new high speed automatic wire auto select and load unit, which can accommodate up to 32 different wires and cables, and a six meter wire stacker to facilitate the introduction of lean manufacturing techniques within their production facility. RR250 Air/Oil Separator Modification LoJack and Becker Avionics Establish Licensing Agreement LoJack has entered into a technology licensing agreement with Becker Avionics Systems to incorporate stolen vehicle tracking and recovery software will be into Becker’s SAR radio direction finder, designed for law enforcement aviation units in the US and Canada. This agreement delivers significant benefits to law enforcement agencies, since the single unit saves precious weight and panel space in the cockpit. LoJack’s tracking and recovery software will also be incorporated into the RT 500M and RT 300 land & sea direction finders. Upgrades to the new systems are also available to those who have the existing SAR-DF 517, RT 500M and RT 300s. Skytrax launches new slim-line tracking device Skytrax Division, has launched their latest new slim-line portable, SkytraxSL flight tracking device. The SkytraxSL offers advanced design features while continuing to incorporate radio and antenna components in a single compact unit now weighing less than half a pound. Standard Aero has begun offering modification of the Rolls-Royce 250 series III and IV air/oil separator gears. The modification is in response to engine modification CEB 72-3271 released by Rolls-Royce last year, which requires the replacement or rework of the gears. By applying a Molybdenum plasma spray to the gear web the part is converted to the new configuration, and the company is the first Rolls Royce approved maintenance to perform the modification at their Winnipeg, Manitoba facility. 8-07 ahl triple play Honeywell's commercial engines are available today to power the helicopter industry's continued growth. We have partnered with Soloy and Heli-Lynx to retrofit the LTS101-700D-2 LTS101-700D-2 Rated at 732 SHP into the AS350B2 helicopter. The D-2 engine upgrade increases power in hot-and-high conditions and reduces fuel burn. The T5317BCV engine is the commercial version of the military T53. It is a zero-timed engine at half the cost of a new engine, has a 5,000-hour T5317BCV Rated at 1,800 SHP TBO and comes standard with a four-year, 2,000-hour factory warranty. Honeywell’s newest engine, the HTS900-2, utilizes game-changing dual centrifugal compressor architecture. It offers high reliability, industry leading power-to-weight ratio, and low cost of ownership. HTS900-2 Rated at 1,000 SHP For power, performance, affordability, and mission-ready capabilities, look to Honeywell. For more information, visit www.honeywell.com/helicopters For an engine evaluation, call Doug Kult at 602-231-1238 ©2008 Honeywell International Inc. EYE ON EAST EUROPE T By Alexander Mladenov Russia was made for helicopters Spread over a territory larger than that of USA or Canada, with a population of 146 million, today’s Russia definitively has an underdeveloped commercial and public services helicopter industry. The civil rotorcraft fleet there comprises around 2,000 machines only – mostly in the heavy and super heavy class. The situation, however, is going to change in the nearto-medium future as the market for light and medium class rotorcraft is poised to expand rapidly. It is hoped that the HeliRussia exhibition to be held in May will be turned into an incentive for this marked drive, providing a venue where OEMs and their distributors can meet their existing and prospective customer base. he slowly-resurrecting economy in Russia and especially its blossoming oil and gas industry are ramping-up demands for helicopter services while a huge number of wealthy individuals and prospering corporations are planning to purchase their own helicopters. Owning a rotary-wing machine is considered a sign of prestige and social status of what is known as the New Russians – the new rich business class in post-Soviet Russia. Currently, Robinson’s R-22 and R-44 are the most popular Western-made helicopters for private use there, but soon a fairly good proportion of their owners are expected to upgrade to turbine rotorcraft offering much higher performance, better safety and comfort. Russia’s big helicopter operators have reported an annual growth in operations of 10-11% in the last few years. In addition to their traditional domestic customers, they have a huge number of contracts being performed outside Russia, mainly in support of humanitarian and peacekeeping operations of UN and other organizations. It is of note that the few big and financially viable operators have already appreciated the need of renewing their fleets in order to remain competitive, support their near-to-medium term growth plans, and last but not least, to improve air safety statistics which has been their traditional weak point. Utair has been the first helicopter operator in Russia to embark upon an ambitious fleetwide renewal program. In this re-equipment drive, the Tyumen-based company is set to augment its 150-plus fleet of Mi-8T/MTs with an initial batch of 20 newly-built Mi-171s. Ordered in 2007 from the Ulan-Ude Aviation Plant through UTair’s leasing arm in a deal amounting to some US $100 million, these will be delivered in 2008. The new helicopter type which is in fact a vastly improved Mi-8 derivative with increased payload and range performance, will be used to support UTair’s operations on behalf of UN around the globe, as well providing support for the activities of the oil companies working in Eastern Siberia. An option for 20 more Mi-171s is going to be converted into a firm order already during this year and deliveries are expected to take place in 2009-2010. The new addition to the UTair fleet will be used in an effort for the company to capture some 25% of Russia’s helicopter transportation services and aerial works market. In addition to the 40 Mi-171s, UTair used to order as many as 15 Eurocopter EC 175 plus 15 options and is going to purchase 20 more AS 350B3s which will be used in a bid to expand the scope of its activities on the domestic transportation market through capturing new and still under-developed niche business. The other Russian big helicopter operator which announced bold plans for fleet renewal and expansion is Gazpromavia, a fully-owned air transportation subsidiary of Russia’s gas monopolist Gazprom. A contract covering the delivery of as many as 46 Mi-171s is expected to sign in the foreseeable future. In the same time, there is something of intrigue in Gazpromavia’s shopping drive as the company has announced plans to purchase as many as four Eurocopter EC 225 Super Pumas for transporting workers and supplies to offshore platforms operated by its parent company. Russian helicopter industry observers immediately noted that Gazpromavia’s Super Pumas purchase is unlikely to set a pattern and impede the significant number of sales of the Mi-171 and Mi-8MTV-1s to local operations. They emphasize the fact that the Mil-designed helicopters are much more suitable for flying in the severe climatic conditions of Russia’s far north to support the oil and gas industry and other businesses, than their western-made counterparts. Moreover, Russia’s government has placed effective barriers in front of the western manufacturers in the form of 40% import taxes. Despite these taxes, however, the rapidly developing Russian economy has made possible a significant number of light piston and turbine-powered helicopters to find their home in Russia. Lack of commerciallyattractive and proven local designs in the one to seven-tonne classes is promising a bright future for all big Western manufacturers who are present in this emerging market and who have already certified (or are planning to certify) their rotorcraft in Russia. Eurocopter has been the most active among these, with more than 50 helicopters already in operation in Russia. Company CEO Lutz Bertling is expecting in the near-to-medium future, 15% of its total sales to be made in Eastern Europe. It would be easy to predict that the majority of the Eurocopter-sold rotorcraft will be destined for operators and owners in Russia. Bell Helicopter is also staying very well on the Russian market. Last year it won 19 orders in 2007 and has high hopes for the future, planning to sell 60-70 helicopters annually there. AgustaWestland’s newly-appointed distributor for Russia is also foreseeing a pretty good business, with expectations to report as many as 100 sales in a couple of years. MD Helicopters has also found that Russia is not a bad market and the same applies for Robinson Helicopters. Undoubtedly, a significant proportion of the future sales of Western-made helicopters in Russia are going to be made to wealthy individuals or prospering corporations. It is also expected that start-up air taxi companies will also join the club of operators of western-made rotorcraft. All the above-mentioned signs are indicating that a boom in the purchases of light and medium-class western helicopters in Russia will happen. It is expected to follow a process similar to that which has caused a hike in the sales of businessjets in the recent years. n 13 ready to serve around the world Offering superior customer service and MRO support for Bell, Eurocopter and Sikorsky Engines / Dynamic Components / Structures and Avionics; including the Sagem Avionics Integrated Cockpit Display (ICDS) System M A I N T E N A N C E FOR MORE INFORMATION: • R E P A I R • O V E R H A U L 1.888.729.2276 OR WWW.VECTORAEROSPACE.COM flight dynamics T Retreating Blade Stall The dynamics of helicopter flight are frequently more complex than even many experienced pilots realize. The basic aerodynamic principle of retreating blade stall is easily understood by any pilot, but in this issue we looks at the less readily- comprehended, but potentially disastrous mechanical-stress aspects of the phenomenon. he least obvious aspect of rotor stall is the stress that it places on rotating components, even when control is not at all at issue. As an airplane wing stalls, it’s pitching moment shifts aft, and the wing “breaks” nose downward. Airplane pilots learn to feel the stall as a control trim shift aft, and also with the sharp break. A rotor blade behaves the same, and starts to drop nose-down with increased stall. This nose down motion is opposed by the blade spar, pitch horn, pitch change link, swash plate and ultimately the control servos. As the stall fights to press the blade’s nose down, and the controls push back to resist the motion, the stresses on all these components rise dramatically. I tell pilots that they can envisage the stresses on the rotor system from blades to servos, by conducting this thought experiment. Imagine taking the helo into a hangar, and bricking the blades into the hangar wall, trapping them and preventing any angle change with strong masonry and cement. Then fire up the hydraulics and start to pull and push on the controls. As the servos press on the swashplate, pitch control rods, blade horn and blades, they stress and twist these components mercilessly. This abuse is precisely what happens as the blades stall and pitch downward as the controls fight that motion! The effect is even more pronounced in flight, because the blade experiences these stall stresses on its downwind trip, but on the upwind side it has full flight speed, and in fact, can be near maximum tip Mach speed. Several times a second the blade sees a stalled high control stress event followed by a near transonic speed event. That classic film clip of a rotor blade’s twists and convolutions as it travels around the rotor head is an eye-opener for any helicopter pilot. I found two hits on youtube.com when I searched for rotor blade. That clip is from a camera mounted on the rotorhead on a Sikorsky S-56 flown right over the main plant in Stratford Connecticut back in the early 1960s. Pilots should not console themselves that things are different today, because the motion of composite blades is certainly no less, and probably more at today’s higher speeds. The stall effect can be reduced and cruise speed can be increased by any means that reduces the rotor’s share of the lift (like wings) and forward thrust (like a pusher prop), but these changes sharply reduce the hover payload. The maximum speed a pure helicopter has ever demonstrated was done with a modified Lynx with BERP blades at about 217 kts. They used great engineering, weight reduction and judicious shaping of the engine exhausts to harness excess engine power to provide jet thrust (at the max allowable to still qualify as a pure helicopter). The counter-rotating Sikorsky XH-59 ABC (Advancing Blade Concept) allowed stall to develop on the retreating side, because the other rotor had an advancing blade on that same side to provide excellent control. The ABC demonstrated 2–Gs in maneuvers at 25,000 ft to show its immunity to stall. I had the thrill once of flying it at over 225 kts as the ABC’s jet thrusters pushed it along while the main rotor was in autorotation. The Sikorsky X2 is a modern attempt to harness the speed potential of the counter rotating pusher ABC configuration. These high dash speeds are heady indeed for helicopters, but old hat to tilt-rotors, which cruise at 250 kts and can dash at up to 300 kts! Because a tilt-rotor offloads the rotors and uses the wing to do its lifting in cruise, its speeds are quite a bit higher, and it also has good cruise fuel efficiency with about half the fuel consumed per mile as compared to a helicopter. Like high-speed helicopters, the tilt-rotor has some payload penalty due to the weight of the aircraft and the hover vertical drag of its wings. The price for avoiding blade stall at high speed is not a small one, but a squadron of V-22 Ospreys in Iraq attests to the customer’s willingness to pay that price to reap the operational benefits. Next installment, loss of tail-rotor effectiveness and other control mysteries. n 15 We Fly We Maintain The Powerful Difference Columbia Helicopters is the only commercial operator of the Model 234 Chinook and Vertol 107-II, the civilian models of the CH-47 Chinook and H-46 Sea Knight. The company’s aircraft operate globally in extreme weather conditions, and are supported by one of the most exceptional maintenance facilities anywhere in the industry. Columbia’s fully functional maintenance facility is a one-stop shop, able to meet all depot level maintenance requirements for internal and external customers. www.colheli.com 503-678-1222 flight training Demonstrate, Direct and Monitor By Mark Ogden Instructing Basics – Part 2 Getting the most out of instruction takes some basic skills for both the instructor and the student. In this second part, MARK OGDEN continues with some tips he picked up over his time in the intructor’s seat. In flight training these days, the theory leans towards the DDM technique – Demonstrate, Direct, and Monitor. The idea is that the instructor demonstrates the exercise, then directs the student using key words (avoiding verbose explanations to a student who may not exactly be in receive mode during high stress maneuvres). After this, the student should have a go at the exercise with the instructor monitoring and not commenting, unless really needed. Complex exercises should be broken down into small blocks to ensure the student can develop the correct technique in small chunks then be given the opportunity to connect the blocks. DDM is good as a basic instructional technique although I have found it to be rather unnecessarily onerous when covering exercises with qualified pilots. Unless it is something completely new, then using the Direct and Monitor is usually more than sufficient. And as instructors gain experience they tend to develop their own techniques and nuances and this is fine provided what is appropriate for the student is kept in mind. Different student personalities will require different instructional techniques. So in the end, it is a matter of taking the fundamentals and melding them with the instructor’s personality. always be ready to take control in time. There is no doubt that there is a fine line between letting the student discover and practice the correct techniques, and ensuring the helicopter is never placed in an unnecessarily hazardous situation. Consider the Risk Just how far to take an exercise is something that needs to be carefully considered by the instructor. I remember, in an attempt to get students to properly fly OEI approaches into a pad, reducing the power on the good engine by retarding the power control lever then reducing the “bad” engine to idle, then having the students fly a single engine no hover approach on the limits into a dusty pad – How dumb was that? It was unnecessarily risky, and luckily for me the students had the skill to pull it off and the aircraft was very forgiving (Mr Sikorsky, you make good machines!). Anyway, the point is, carefully consider the hazards of what you’re proposing to do; make sure the gain is worth the risk and look for other means of getting the message across. In this case, simulation or flying the approach with both engines up but “notionally” limiting the power would have been just as effective and far less risky. In other words, think hard before coming up with a bright idea! The De-brief Another aspect that is sometimes glossed over in basic training is the de-brief. Do you de-brief in the aircraft or on the ground? Simple stuff, but the instructor should I think it depends on how the flight went avoid talking over radio traffic. The student and the student’s personality. If the flight needs to be given a reasonable chance of went well and the student has a good hearing what the instructor has to say! If positive attitude, I’ll de-brief in the aircraft there is a mute function on the intercom, on taxi back. If however, you’re then its judicial use can dealing with something that be handy (although I There is no doubt that requires explanation without have seen pilots press there is a fine line between distraction, or dealing with basic the mute button even students, then de-briefing in the before they have heard letting the student discover classroom or office is definitley the start of a radio and practice the correct preferable. call) – not a good idea In any case, after the flight, with the radio being techniques, and ensuring the student should receive a such an important the helicopter is never thorough de-brief which aid to maintaining placed in an unnecessarily should start out with the positive situational awareness points. Starting with the rough and avoiding collisions hazardous situation. issues can have the student with other traffic! “turning off” and not taking in There is almost the points the instructor wants to raise. At nothing worse than instructors who shadow least starting with the positive, the student the controls too closely. I have talked to should be listening! De-briefs should not students who never actually “flew” an be overly long; instructors should pick the autorotation because the instructor was salient and important points to de-brief,and shadowing so closely; the students could leave the small stuff to the bar de-brief; remove their hands and the controls moved where the student is likely to be more magically all on their own! The counter to receptive! n this though is that the instructor should The Right Environment 17 law & order F FAA REGISTRY ACTIONS The FAA has taken a couple of arguably significant steps lately which may affect your plans as you buy and hold aircraft. Let’s take a look at them. irst, the FAA released four instructive memos on February 28, 2008. One memo of note advised in words that cats and dogs could understand, that we need to make sure that we have our act together when it comes to completing aircraft registration applications. Most of us have been there at one time or another – we cut a deal to buy an aircraft that we intend to operate the day after closing. Everyone agrees on an escrow agent in Oklahoma City, and the documents start heading that way from all over the place. The Seller sends in a Bill of Sale and maybe a lien release. The Buyer sends in the all-important registration application. Unfortunately, however, somebody was in a hurry and transposed a couple of digits in the serial number or, as more frequently happens with those of us that take title in a limited liability company, the title of the applicant’s signatory is different from that which was designated on the LLC affidavit that’s on file with the FAA. Until February 27, it was no problem, right? The escrow agent would get permission from everyone, out came the bottle of white-out, and they’d change the application so that the closing would go through. That’s not the case any longer. The new policy as set forth in the FAA’s memo is as follows: “…..all [registration] applications must be complete and essentially “perfect” in original appearance to be acceptable. This means no white-out, strike-throughs, or other alterations to original text will be accepted… An example of an exception to this policy would be that the only deficiency in the application is the need for the typed or printed name in the signature block. The typed or printed name could be added and the original application returned.” At first blush, this may not seem like a big deal, but imagine having to go to your boss and explain why you have to pay a couple more days’ per diem interest on a helicopter loan because the closing got pushed back while the Buyer overnights another registration application to the escrow agent. Or why the aircraft that he just paid several million dollars for can’t go out on the contract tomorrow because the registration application is bad. That’s not a good situation to be in, so from now on give your applications an extra once-over. Of potentially more significance is a Notice of Proposed Rulemaking that the FAA also published on February 28 and therein proposed changes in aircraft registration requirements. According to the FAA, there are serious safety deficiencies in the current system, starting with the fact that “almost one-third of the aircraft on the register [have a] questionable registration status.” In the same NPRM, they say they have records on 340,000 aircraft, so that’s a lot of questions, right? The FAA also cites the following: l 17,000 aircraft have been reported as sold without the Buyers having submitted registration applications; l 4,700 aircraft purchasers have started the registration process without completing the requirements, with about 2,100 of those being in the “registration-pending” category for more than 12 months; l Approximately 30,000 aircraft are known to have bad addresses on file; and l Close to 14,700 aircraft have had their certificates of registration revoked due to bad addresses, yet remain in the system to prevent reassignment of their US registration number. Up to 41,000 additional unidentified aircraft are estimated to be inactive or possibly no longer eligible for registration. The potential problems are somewhat obvious. The FAA, as well as aircraft OEMs, depend on accurate registration information so things like airworthiness directives can get where they need to be, which is with the aircraft owners. Law enforcement agencies, especially the DEA and Department of Homeland Security, need accurate records for various reasons as well. To address these problems, the proposal is for all aircraft certificates to have an expiration date which for new certificates would be three years from the last day of the month in which it is issued. Aircraft owners can renew a certificate for successive three-year terms by submitting a renewal request form and paying the applicable fee (which, depending on who you believe, could be anywhere from $45-$130). For currently registered aircraft, they’ll have to be re-registered within a three-year phase-in period, and each aircraft would have three months to accomplish the re-registration. Failure to re-register would result in the expiration of the certificate and, after 30 days, the administrative cancellation of the N-number. There would also be deadlines for an aircraft registration to remain in either the “sale reported” or “registration pending” categories, which would be six months for sale reported, and 12 months for registration pending. Once again, if the time limits are exceeded, the FAA could cancel assignment of N-numbers. Lastly, you would have a maximum of 12 months to use the pink copy of the application for registration, including any subsequently issued extensions, as temporary authority to operate the aircraft after ownership has transferred. In talking with some folks the most common reaction seems to be “I have to register my car every year, so what’s the big deal?” If you want to comment, though, the deadline is May 28, 2008 and must be identified by Docket Number FAA-2008-0188. n 19 A M E R I C A’ S L E A D I N G P R O D U C E R O F H I G H - P E R F O R M A N C E H E AT E R S A N D A I R C O N D I T I O N E R S F O R T U R B I N E H E L I C O P T E R S. Fly your AS 350 in comfort this summer. Air Comm’s AS 350 Cabin Air Conditioner is the most advanced, effective system you can buy: > Lightweight > Discreet and Attractive Installation > Leak-proof Torq-Lok Refrigerant Fittings > One-of-a-kind Adjustable Compressor Mount for Easy Belt Alignment > Supported with Global Service and Training Air Comm is America’s leading producer of high-performance heaters and air conditioners for turbine helicopters. 3300 Airport Road, Boulder CO 80301 Tel: (303) 440-4075 Fax: (303) 440-6355 [email protected] www.aircommcorp.com safety T By Phil Croucher Checklists – love them or hate them! Documentation, particularly checklists, shares a quality with drains, in that they are vital, his is partly through ignorance, as not everybody is expected to be a technical writer, but a good part of it is simply not caring. How many helicopters are there that cost several million dollars, yet have a flight manual that is badly produced, organized and printed? Relative to the cost of the machinery, the production of documentation can be miniscule – in quantity, a 500-paged coloured book can cost as little as $100 to print! However, this column is about checklists, which often have to be consulted in an emergency, and at first glance need to give you the necessary information which may assist in preventing loss of life. The ones we generally find in flight manuals are poorly laid out, and impossible to read under pressure or at a glance, so I would like to pass on a few tips to those people who end up having to produce them for the manuals. It should be noted that locally-produced checklists have to reflect what’s in the flight manual as closely as possible! Take, for instance, the sample below: yet often ignored. text, your eyes will catch on all the sharp edges and slow you down considerably. l The trick is to make the headings and their relative superiorities immediately obvious, with the use of indenting and different text sizes, as shown above. l Each checklist item should be numbered for ease of reference l Use some method of drawing the eye towards the response, either by simply alternating the colour of each line (just create a table and autoformat it in Word). Alternatively you could use what is called a lead-in, which is a series of full stops between the item and the response. This is just one example of how a little more effort from the support staff in any organization can make the life of a pilot or an engineer just that little bit easier (or longer!). Common Sense At first sight, it looks OK, but on closer inspection, there is considerable scope for improvement. Firstly, the same bold font is used throughout, and underlining is used for the headings – a much better approach would be indenting. A little tweaking can produce this: Much better, isn’t it? l For headings, use a sans-serif font – in this case Helvetica, and for body copy use a serif font such as Times New Roman. (Serifs are the little feet on every letter). The point about serifs is that they smooth and round the edges of a character, so that when you are reading a lot of text, your eye glides easily along. If you use a san-serif font for body Just as rules are for the guidance of wise men, remember that using airmanship (common sense) is often a preferable alternative. The checklists in the flight manuals are often cobbled together by test pilots who have to make guesses about what situations might be encountered, and they are certainly written for legal rather than practical purposes, in that they are there to cover somebody’s backside and very often enter the Logic Free Zone. I am not advocating that you ignore them completely, but they cannot be written for every possible event. Your situation at the time may be different. With all due respect to the lawyers and the subsequent Board Of Inquiry, I would certainly alter the checklist on the fly if it meant the difference between living and dying! The “Land Immediately” option has been removed from many flight manuals because people were landing immediately in some really stupid places. Here’s what the other options mean: l Land as Soon as Possible. Land without delay at the nearest location at which a safe approach and landing is reasonably assured. That is, do not land in or on somebody’s barbecue when there is an empty field next door! l Land as Soon as Practicable. Extended flight beyond the nearest approved landing area is not recommended. In other words, land at the nearest airfield where technical support is available (a maintenance facility). If there is non reasonably close, land where the engineers can get to you later. And operations manuals? Well, maybe we’ll talk about those next time! n 21 The Name To Know In Helicopters SEASPRITE The Kaman name is synonymous with creativity, innovation and leadership. It has been this way since we were founded in 1945 and it still holds true. Kaman continues to innovate and respond to the needs of a changing market with new products, new technologies and an exciting new area of focus. From innovating new concepts and vertical flight solutions to delivering design, integration and manufacturing services to meet a rotorcraft industry in need. Kaman is the name to know. KAMAN AEROSPACE | | CONNECTICUT USA 1-860-243-7431 [email protected] | Flight instruction W By Chris Esposito License to Learn They say that the pilot’s license is a license to learn, and after a few months as a flight instructor, I could not agree more. hen I wrote my last column, I had given about 50 hours of instruction, and considered myself relatively inexperienced in the art of instructing. While my experience is certainly not on par with those who have been instructing for years, I believe I have learned more in the last 100 hours of instructing than I did for a few of my ratings. To date I have logged over 175 hours as a flight instructor, and in those hours I have noticed quite a bit about both helicopter flight and people in general. I have definitely become a better pilot, and I am much more comfortable with the machine than when I started teaching. Hover autos no longer cause a tingle up the spine, and I actually enjoy settling with power. I have noticed myself smiling while “working”. Suddenly that huge investment of time and money makes so much sense. I finally experienced the feeling of having my first student pass a checkride. It truly is satisfying to know you helped someone reach their goal, and a formidable one at that. I took over his instruction when his previous instructor left for the Gulf of Mexico. He had been signed off for his private checkride, but did not pass the oral. This was partly due to confidence in the answers, and I worked through many ground sessions with him, giving mock oral tests and trying to trick him the way an examiner might. I may have acted a bit like a drill instructor, but he got the point, and got through the oral with no problems. I was never worried about his flying, and he passed his checkride with flying colors. The student is only 18, and now he is working on his commercial license. I’m sure after having many students pass their checkrides, it will become the norm. Nevertheless, my first successful signoff felt great. Our school will work with students to organize night flights since we typically close at five. Occasionally we will have a group of students who need night flight at the same time – a situation we had a few weeks ago. Two commercial students needed a long night cross-country, and another student needed to work toward the required three hours of night-time for their private rating. I was flying with one of the commercial students – a pilot with several hundred hours of airplane time, and one who is also planning on being a controller. I didn’t have to worry about much, as he had planned everything out, frequencies were written down, and he brought his GPS. We decided to operate as a flight of three helicopters, with one of the other instructors acting as the lead helicopter. We lifted a little after sunset, and began our trek to Jacksonville, Florida. Paranoid as I am, I asked my student to slow a bit so that the lead helicopter could get a good distance ahead of us. Immediately I noticed that “formation” flight is much harder at night, as lights can get larger quickly. After talking on our own frequency, we decided to hold about 65 kts for the flight up the coast. A little practice and we were holding our distance from the lead helicopter pretty well. Then I made the decision to look behind me to see how close the other helicopter was following. I cringed when I saw how close they were, made a call for them to back off a bit, and relaxed. Occasionally I would look behind our helicopter at the other traffic, gasp, and yell on the radio. Eventually they started to get the point… this was the student’s first night flight, and I was doing my best to keep him from speeding up and flying into our tail rotor. It seemed that all was fine, until we landed as a flight of three in Jacksonville. I was in the middle of course, and out of the corner of my eye I spot the helicopter that was supposed to be behind me. At that point we were on with Jacksonville tower and I wasn’t about to say anything, so I directed my student to slow down and we decided it was probably best for us to stay third in line. I learn something new on every flight, and try to apply it to the next one. Group night flights are now flown with much greater distances between helicopters. I look behind the helicopter a lot more than I used to. I have been volunteering myself for a lot of night flights lately – I find them a lot more peaceful, though all of these flights have been with the engine running, and I assume when it stops the flight will not be as peaceful. n 23 Independent, innovative and courageous, Sergey Mikheev is the longserving Designer-General of Kamov. A born engineer and manager, his distinguishing personality has been appreciated in both Soviet and post-Soviet times. ALEX MLADENOV reports from Moscow on the views of a man who continues to be the driving force of development within the Soviet/Russian civil rotorcraft industry. 24 c ov er feature The Ka-32 continues to be highly prized as a flying crane 25 supporting the oil industry in Russia’s Western Siberia. The 3.4-tonne Ka-226 was designed with the aim of becoming a deserving successor to the Ka-26, a dependable workhorse for a multitude of utility tasks, with affordable operating costs, high reliability, easy to fly and maintain. 26 S ergey Mikheev is a charismatic industry veteran, recipient of the prestigious Hero of Russia golden star award and the longest-lasting DesignerGeneral in modern Russia’s aviation industry. During the turmoil of the early/mid 1990s when state support suddenly disappeared, he was required to learn, in a very short time, everything possible about western-style commercial helicopter operations. His newly acquired knowledge and skills enabled Mikheev to ensure the survival of Kamov, taking the company from the verge of failure and allowing the design bureau to not only stay afloat, but to continue development of new types and modifications of both civil and military helicopters. Understandably, 70-year-old Mikheev, after being at the helm of Kamov Design Bureau for 34 years, enjoys a pretty high media-profile and possesses very journalist-friendly behavior. A talented manager and engineer, when he took over the management of Kamov Design Bureau in 1974, Mikheev was the youngest Designer-General in the history of the then Soviet aircraft industry. Because of the Soviet-era approach of separating aircraft design and production activities, Moscow-based Kamov (popularly known as Kamov Design Bureau) has been engaged in helicopter design and development activities as well as prototypemaking and flight testing, while mass production of its certified designs was carried out by a chain of purpose-built serial production plants. Traditionally, Kamov was involved principally in military helicopter Ale x ander Ml adenov design, later developing derivatives for civil use. In the 1960s, however, Kamov became the first design bureau in the former Soviet Union to develop a purely civil helicopter design. The Ka-26 was an extremely popular piston-engined, co-axial rotor design with detachable cabins for various payloads, used mainly for agricultural and patrolling work. It did rather well at the time, with over 800 examples produced. Mikheev believes that the Ka-26’s successor, the twin-turbine Ka-226, is well-situated to continue the success story. Mikheev considers that developing civil helicopters can be much more difficult than developing their military counterparts. “As a rule, it takes much more effort and time for us to satisfy both the strict civil certification requirements and the increasingly demanding commercial customers at home and abroad. Interestingly, when we commenced the Ka-32’s certification in Canada, our basic design was already certified by the Russian military. We discovered, however, that the nature of the logging work was causing much higher loads on the helicopter than anything we had seen or anticipated; and as a result this led to a serious re-assessment of the structural loads and service-life issues of the Ka-32 during its civil certification process,” Mikheev said. “Secondly, as a rule, civil helicopters feature a much higher utilization than their military counterparts, providing us with a whole new world of reliability statistics regarding the helicopter’s systems. There are some flight regimes where the civil helicopters are experiencing much higher structural loadings than the military ones; in addition, the reliability requirements for them are considerably higher.” Mikheev believes that the operating cost of civil helicopters will be the main factor limiting tomorrow’s demand for helicopter services and their scope. He points out that helicopters are an integral part of the technological process in many industries and therefore operating costs have a great impact on these areas. He also thinks that the man-hours required for servicing and maintenance should be reduced in order to keep labor costs under control. “I believe that this applies to the Mikheev believes that the operating cost of Charismatic Sergey Mikheev, a 70 year-old industry veteran, owns the distinction of being the longest-lasting Designer General in today’s Russian aviation industry. civil helicopters will be the main factor limiting tomorrow’s demand for helicopter services and their scope. 27 The company has now in excess of 80 Ka-32s operating in markets once considered as nontraditional for Russia, including Canada, Switzerland, Spain, Portugal, Japan and INAER Group South Korea. military helicopter world too and that both worlds can benefit from the technological advances made by the industry. As an example, I can point to a military requirement dating from the mid-1980s that called for eliminating the points in the helicopter design requiring lubrication at regular intervals; at a later stage this design feature was also introduced into our civil designs.” Mikheev illustrated this by pointing out that when the Ka-32 was first introduced to service with a Western operator (Heliswiss), the hourly operating costs were around $US2,000. “Thanks to our maintenance rationalization efforts this figure is now reduced to $US800. By doing this in close cooperation with the operators, 28 we have extended, for example, the gearbox time between overhauls (TBO) from 500 hours, as it was set for the military derivatives and the Russiaoperated Ka-32T/As, to 2,000 hours. We are planning a further increase to 3,000 hours.” An important symbolic marker for today’s Kamov is that the company has now in excess of 80 Ka-32s operating in markets once considered as nontraditional for Russia, including Canada, Switzerland, Spain, Portugal, Japan and South Korea. It can be viewed as a positive reflection on Kamov’s business globalization and the operating efficiency of the Ka-32. Developed in the 1980s from the Ka-27 naval workhorse, it boasts some unique flight features that are a result of the coaxial counter-rotating design, such as an extremely high degree of stability when in hover (particularly useful for logging and construction works) and simplified controls. The Ka-32 has now proved to be a successful niche player in the West for over a decade, and Mikheev comments that it has been a valuable training exercise, enabling Kamov to embrace the free-market realities and globalize its commercial operations. “It was like studying a brand-new science as we tried to rapidly understand the physical and psychological aspects of the market processes in the West; as well, we had to understand the psychological drives of the Canadian customers who were the first to buy Russian helicopters for commercial applications.” Dmitry K azachkov The process began with the Ka-32’s experimental operations in Switzerland and Canada. It was the Ka-32T version initially, which saw a fairly high daily utilization of 10-12 hours transporting external sling loads, utilization previously unseen in the Soviet Union and Russia,. Lack of a type certificate recognized in these client countries however, proved to be a serious obstacle for Ka-32 sales in the West. This motivated the design bureau to undertake a wide-ranging program of adopting the new AP-29 airworthiness rules in Russia, which are equivalent to US FAR-29. The Ka-32 obtained its Russian type certificate in July 1993 and in that same year the certification process in Canada and Switzerland commenced. Mikheev points out that it took Kamov and the operators five years and a significant effort to convince the aviation authorities that the Ka-32 is a safe design. In May 1998, Transport Canada issued a type certificate for the Ka-32A11BC version, three of which are operated by VIH Logging on logging, aerial construction work and firefighting. The aviation authorities in Switzerland certified the Ka-32A12 version, operated by Heliswiss. The VIH Logging Ka-32s, as Mikheev boasts, have seen extremely high utilization, each logging over 2,200 hours per year. Both launch operators for Westernized Ka-32s (each with three examples) use their helicopters not only in their own countries; but also under contract in neighboring and remote states. Heliswiss Ka-32s for example, have been busy flying throughout Europe performing construction work. A great achievement of Kamov’s cooperation with VIH Logging was, Mikheev declared, his company’s solutions that were custom missionoriented as well as meeting the Western operating and airworthiness requirements. VIH Logging enjoys the distinction of having the leading Ka-32 operation in the world, flying the highest-time machines, with over 14,500 hours under their belts each. These are mainly engaged in logging, which is considered one of the most demanding types of operation for a helicopter. Says Mikheev, “In order to make the Ka-32’s logging work costeffective and to compete with the Erickson Air Crane which has a higher payload than that of the Ka-32 (9 tonnes vs 5 tonnes), we were required to do something innovative, so we invented a time-saving mission profile that the competitor cannot match. ABOVE left: The Ka-226 is the only Russian-made light category helicopter certified to fly over urban environments and it is also meeting the stringent US and European noise requirements. opposite page: Spain is the largest European customer for the Ka-32A11BC, with the type used for firefighting. Ka-32’s principal operator in Spain, Helisureste, is the diving force behind the EASA certification effort. 29 INAER Group Making it possible is the high rotor disc loading of the Ka-32, which could be seen as an unfavorable feature of the helicopter. We, however, turned it to our advantage, shortening the time of the logging process because the high disc loading enabled the fully-loaded helicopter to safely maintain a very high rate of descent – up to 14 m/s (2,755 fpm). This is what we call “motor autorotation mode”, enabling us to reduce considerably the logging cycle and increase the helicopter’s overall productivity. The use of the “motor autorotation mode” can be seen as a bright example of how we have managed to turn a potential disadvantage into a decisive operating advantage of the Ka-32 when facing free-market realities.” “We initially subsidized the launch customer in Canada because we accepted the hard conditions put upon us. We did it just because we eagerly wanted to enter this niche but prestigious market. We have guaranteed 3,000 flight hours to the operator and subsequently succeeded in overcoming all obstacles during the certification process. As a result, we 30 now have a commercially attractive helicopter with a 16,000 hours design life and 8,000 hours TBO, which is capable of logging up to 250 flying hours per month. We are continuing to work with VIH Logging in an effort to further rationalize the maintenance schedule and therefore further reduce the helicopter’s operating costs.” International Markets Spain and Portugal are further Kamov success stories from the early/ mid 2000s. Ka-32 firefighting operations in Spain brought a wealth of experience in Bambi-Bucket use, and flying in ambient air temperatures exceeding 45° C. The Ka-32A11BC has been operated by Helisureste in Spain since 2004 and currently there are 11 helicopters in the fleets of two operators. In 2006, six more Ka-32A11BCs featuring improved cockpit avionics were acquired by Portugal’s government, with one in the fleet of local operator Heliportugal to be used for training. Further expanding the Ka-32’s European market success however, necessitated the helicopter being granted EASA type-certification. It proved to be a long process as the European airworthiness requirements differ from those in USA, Canada and Russia, particularly regarding the power-plant and auxiliary power unit. Considering the duration of the process and the possible delays, EASA granted permission for Ka-32A11BC operations in Europe to be extended until September 2009. The EASA type-certification program, which is being funded mainly by Helisureste, comprises paperwork and flight testing with the latter being carried out in February 2007 using a Helisuresteowned helicopter in Spain. Based upon the flight tests and documentation reviews, the EASA certification team required the introduction of some design improvements, mainly concerning the cockpit ergonomics as well as improving the aircraft’s flight manual. Currently Kamov is working with engine design authority Klimov on completion of the power-plant/ APU certification process and Mikheev expects that the Ka-32A11BC will obtain its much sought-after EASA type certificate by the end of 2008. Helisureste was the first operator INAER Group to realize the sound commercial potential of the Ka-32 in the Southern Hemisphere during the low season in Spain, with two of its helicopters firefighting in Chile. China, Chile and Mexico are now also countries where Kamov has achieved Ka-32A11BC certification by the local civil aviation authorities, opening the door to further sales opportunities. South Korea is yet another recent conquest market for Kamov, with 57 Ka-32As operated by government organizations and commercial operators there. They are used mainly for firefighting, forest patrol and SAR, with a 3,000-liter Simplex fire attack system introduced into that market. It is the largest fleet of Ka-32s in the world, supported by the local company LG International. Then, in Japan, the first Ka-32A11BC was delivered in late 2007 to Akagi Helicopter; who also provided support for obtaining a type certificate from the local airworthiness authority. Upgrade Program Mikheev has a real interest in moving the Ka-32’s upgrade program forward, enlarging the cabin in an effort to make the helicopter commercially-attractive for internal cargo and passenger transportation. The new variant will retain the proven power-plant and rotor system and will have the same payload as the Ka-32A11BC. The cabin of this new derivative known as the Ka-32-10 will be stretched and fitted with a rear cargo ramp, while the cockpit will also be of an all-new design. Mikheev also views a potential market for the Ka-32-10 in SAR operations over sea and difficult terrain, as well as the servicing of offshore platforms and support ships. The new helicopter will be capable of full Cat-A operations and Mikheev says that the baseline Ka-32 has already been tested for safe operations in OEI conditions at a maximum take-off weight. These tests have demonstrated that the helicopter is fully capable of safe operation in such circumstances, even if equipped with the existing engines and gearbox. The Ka-32-10 is still in the design project stage and it is yet to be decided how the development work will be funded; Mikheev was also not prepared to above left: Mikheev has a real interest in moving the Ka-32’s upgrade forward, enlarging the cabin in an effort to make the helicopter commercially-attractive for internal cargo and passenger transportation in addition to retaining the unique flying crane features. above right: Mikheev says that the Ka-32 has already been tested with the increased-power VK-2500 engine; it can be used on the serial production examples even now should a customer raise such a requirement. opposite page: The Ka-32 obtained its Russian type certificate in July 1993 and the same year the certification process in Canada and Switzerland commenced. 31 by October this year. The helicopter is already in small-scale production and operating with several government and commercial customers, while Russia’s oil and gas market is expected to be the main driver behind the commercial success of the Ka-226. Gazpromavia, the air transportation subsidiary of the gas monopolist Gazprom, is the most important commercial customer and is acquiring the Ka-226AG version for gas pipeline patrol and passenger transport. Mikheev believes that the Ka-226 will have a bright future in the Para public role as the type is already being operated by Russia’s Federal Security Service, as well as Moscow’s Police Service. Another prospective government customer is the Emergency Situations Ministry, but it is yet to make a firm commitment to the new design. INAER Group The KA32 is used heavily by Spanish operator Helisureste and an example is seen here working to construct high voltage power lines. comment about any specific potential customer(s). Regarding the possibility of powering the current and future Ka-32 versions with the increased-power VK-2500 turboshafts which will provide more power margin in OEI operations compared to today’s TV3-117VMA, Mikheev says that the Ka-32 has already been tested with this engine and it can be used on the serial production examples even now should a customer raise such a requirement. The existing VR-252 gearbox is said to be well capable of handling the increased power rating of the VK-2500. A topical issue for Kamov is the introduction of on-condition maintenance, replacing the bulky 32 preventive maintenance system dating from the Soviet times. While Kamov has already introduced a partial on-condition maintenance system on the Ka-32A11BC, an all-encompassing on-condition maintenance system is to be developed in the near-to-medium future by Russia’s helicopter industry holding company, Vertolety-Rossii (Russian Helicopters), which in March 2008 took over management of Kamov as the 100% owner of company shares. The Ka-226 is a new 3.4-tonne twin-engine helicopter designed to replace the faithful Ka-26, and is the first helicopter designed in accordance with the new AP-29 airworthiness rules. Mikheev said that development of the basic version will be completed “The Ka-226 is the only Russianmade light category helicopter certified to fly over urban environments and it is also meeting the stringent US and European noise requirements. Designing it, we deliberately did not want to make it a luxury machine; we would like instead to see the Ka-226 becoming a deserving successor of the Ka-26, a dependable workhorse for a multitude of utility tasks, with affordable operating costs, high reliability, easy to fly and maintain,” Mikheev commented. The Ka-226’s better hot-and-high performance was the result of replacing the Rolls Royce 250 engines (2 x 450shp) with Turbomeca Arrius II units (2 x 550shp). The new engine choice allows the Ka-226 to operate under Cat-A in hot and high conditions up to 2,500 m [8,200ft] and 50°C; the Rolls Royce 250-engined Ka-226 is capable of Cat-A operations in standard conditions only. Mikheev said the Arrius II-powered version (known as the Ka-226T) will be proposed for the resumed joint Indian Army and Air Force light helicopter competition. The competition is to select a design suitable for operating in hot-and high-conditions over the difficult terrain of the harsh Himalayan environment, with as many as 317 examples expected to be procured by both services. What is certain is that Kamov has a competitive product for participation in that tender and the experience to deal with such a complex Mikheev believes the Ka-226 will enjoy a bright future for use in the parapublic role as the type is already being operated by Russia’s Federal Security Service as well as Moscow Police Service. Andrey Zinchuk / K amov operating environment, as the Ka-226T can be safely flown at an altitude of up to 6,000 m (19,680 ft). The Ka-226T is expected to obtain its Russian type certificate in 2009. Mikheev also said that he is pretty happy with the results of the newly-designed main rotor system that demonstrated higher than expected efficiency, enabling a maximum take-off weight increase to 3,800 kg (8,360 lb) from the current figure of 3,400 kg (7,480 lb). The invaluable experience gained during the certification and modification work performed on the Ka-32A11BC in the 1990s and early/ mid 2000s is currently being used in the Ka-226’s improvement process and Mikheev points out that it will continue to be considered during the design and certification activities related to other new Kamov designs, such as the Ka-62. The Ka-62 is a conventional helicopter design in the 6.5-tonne class with a fan-in-fin tail. It was designed, together with its military derivative known as Ka-60, in an effort to meet the severe operating requirements of prospective Russian customers. Mikheev explained that among the most rigorous requirements considered by the design team, and outside the reach of Western designs, is that the Ka-62 shall be operated in Russia’s Far North, in outside air temperatures as low as -55°C. If everything goes well, the Ka-62 is expected to be certified in Russia in 2011. The Ka-62, he believes, will be a worthy successor to the long-retired Mil Mi-4, an unsung workhorse that literally created the Soviet civil helicopter transport industry in the 1950s and 1960s. There will be a maximum possible degree of commonality between the Ka-60 and Ka-62 designs, but Mikheev expects some significant design variation to appear due to the differences between the military and civil certification rules. The unification, he says, can be achieved mainly in the systems, although these will be two different helicopter types. Kamov’s first attempts to design a 6.5-tonne helicopter for civil use date from the mid-1990s. At that time Kamov worked closely with Italy’s Agusta on what is now known as the AW 139 design, but the companies subsequently ceased their cooperation. Interestingly, talks are currently underway between Vertolety-Rossii and Agusta-Westland for organizing the AW 139’s production under license in Russia for local customers. Mikheev, however, considers that this move would not threaten the Ka-60/62 development efforts. In the mid-term, Mikheev sees potential for an all-new design of a large, high-speed helicopter. Known as Ka-92, it will cruise at 450km/h (243kts), transporting up to 30 passengers over a maximum range of 1,500km (810nm). This design, he believes, could become an integral part of a new air transportation system for serving Russia’s remote locations lacking any usable airfield infrastructure. The Ka-92 will use the Kamov’s coaxial rotor and the increased speed can be achieved thanks to a dramatically increased lift-to-drag ratio of the co-axial rotor scheme. Some preliminary engineering work on the new design has already been done, and based on this Mikheev sees the development of such a class of rotorcraft as achievable. Mikheev says that the further development and promotion of Kamov’s designs in foreign markets is necessary for far more important reasons than merely securing additional sales. “We consider this export drive as a useful process for Russia’s helicopter industry as a whole, in an effort to ease the recognition of its products on the international markets. In fact, the harmonization between the Russian and foreign airworthiness rules in the process of selling the Ka-32 abroad has enabled our company to start solving a challenge of national significance; that of drawing closer to each other the Russian and Western aviation systems. This is in the best interest of the entire Russian industry; without solving this complex issue we cannot have any chance of ensuring the competitiveness of Russian-made products on the international market.” The company, Mikheev believes, will continue to perform the tasks set by its new owner Oboronprom/ Vertolety-Rossii holding company, but this will require an increased number of personnel, expansion of its design and test base and renewal of the design bureau’s equipment and machinery inventory. Mikheev noted that Kamov has endured the last 15 years working with a cruel deficit of research and development money. Nonetheless, he says, the company achieved 33 The Ka-62 is a conventional scheme helicopter design in the 6.5-tonne class. It was designed, together with its military derivative, known as Ka-60 (seen here), in an effort to meet severe operating requirements raised by prospective Russian customers and first flight is expected in 2009, while certification in Russia is scheduled for 2011. good results. “In these unfavorable circumstances we have managed, for example, to develop, certify and launch in production the Ka-226, an all-new design, without any state funding support. In addition, we have independently succeeded certifying the Ka-32A11BC in Canada and spent seven long years participating in Turkey’s attack helicopter competition, funding this undertaking from our internal resources. We have also managed to find alternative revenue sources through establishing our own commercial operation with the Ka-32, selling several machines of this type abroad and providing engineering and logistic support to the foreign Ka-32 operators. At the same time, we have continued working on defense contracts such as the Ka-31 aerial early warning helicopter sold to the Indian Navy. “We have managed to do all this only by constantly hunting for ways for the company to survive in the difficult market-economy conditions in the post-Soviet era. Notwithstanding the reduction in manpower, we have managed to retain Kamov’s vital power,” Mikheev concluded. While he does not say it, it is undeniable that he himself has been the crucial driving force behind this remarkable string of achievements. n Tough Day At The Office Hanging out at the beach and flying helicopters – what more could a pilot want? But for the crews of South Africa’s Surf Rescue service it’s 95% boredom and 5% pure adrenalin as they patrol the popular coastline, ready to save lives in difficult and often very risky operational conditions. Pilot MIKE REID reports on one of those 5% adrenalin days. Photos by Mike Reid, Kim Barley, and Netcare 911 36 37 I t’s New Years day and I have the “A-Team” with me. We are “Rescue 4”, based in Port Elizabeth, and one of five surf rescue helicopters operating along the South African coastline. We are casually seated around a wooden table littered with milkshake glasses and coffee mugs at one of our carefully selected Surf Rescue Standby Points” – our favourite beachfront cafe chosen by the crew for its proximity to the best value-for-money meals, great coffee, and its spunky waitresses. One of the rescue crew comments on how long we have been waiting around for something to happen. “OK, let’s get out of here and go look at Well’s Estate. I feel like something’s going down there today. Busiest day of the year and the alcohol has been flowing non-stop since last night,” suggests Elgin, the ALS (Advanced Life Support) paramedic. “I think I’m even going to put my wetsuit on!” he comments. Elgin’s role of treating patients once they have been extracted from the surf means that he isn’t required to wear a wetsuit, so the crew laughs and Elgin puts the wetsuit on anyway. 38 Mark (SAL – Surf Lifesaver), Elgin (Netcare 911 – ALS Paramedic) and Kevin (NSRI – Sea Rescue) are also the regional service coordinators. They’re all big guys around the 100 kg-plus range and I’m around 80 kg. We are using the Eurocopter EC120, an amazingly versatile helicopter with an unfair reputation for being underpowered. Often compared with the Bell 206B Jet Ranger, the difference between the two aircraft is probably more about the way pilots fly them. I am no great authority on the EC120, with just under 600 hours flying it in various roles, but I have learned to love it and fly it with respect. Today I put more fuel in than I usually would – 210 kg instead of the usual 145 kg. With a heavy crew, floatation gear, cargo hook and all the medical/rescue equipment there isn’t much weight to play with, even at sea level. The wind is gusting 30 knts at the airport, which helped the decision to carry a little extra fuel. I know I will burn some of it off on the patrol. We lift off easily and set out heading for Well’s Estate, a large beach recreation center east Waves are breaking under us, sea spray clawing at the aircraft, clouding my vision. Damn! Ditch or pull power... I’m not ditching mate! The Vodacom Netcare 911 Surf Rescue EC120 hovers out of the way while the lifesaver secures the patient and the second rescue swimmer manages the strop from the door and guides the pilot. The helicopter moves backward and out of the way while keeping the patient visual. Managing rotor downwash impact is a vital part of the pilot’s responsibility during rescue operations. along the coastline. As with every New Years day, the beaches are packed and as we approach we can see a mass of people in the ocean, looking somewhat like a bizarre oil-slick on the surface of the waves, stretching for more than a kilometer along the beach. “It’s going to be rough out there. The poor lifesavers – they’ve got their work cut out for them today,” I mention to no one in particular, as I reduce collective and slow down to patrol the back line. We crab slowly up and down behind the line of bathers at about 150 ft, buffeted by the stiff on-shore breeze. As I turn at the end of each run, the helicopter rushes away as the wind grabs it and then appears to stop dead as I get the nose back into wind. The swaying line of bathers in the surf wave as we pass each time. Not for nothing is the service often described as “95% boredom, 5% sheer adrenalin”. This was the 95% boredom! Ahead of us one of the bathers is a bit further out than the others. He waves his arms lazily as we have seen many do during the morning. “What’s going on with that guy?” I ask casually. “Looks OK,” answers Mark. “Just messing around. We’ll have a closer look as we go past.” I descend gradually and we’re at about 50 ft off the water, coming up to him, when I see his arms go limp above his head and he disappears under the water. Then Kevin, sitting behind me shouts, “He’s in trouble. Bather looks in trouble. Turn around Mike, let’s have another look.” Kevin has his nose against the plexiglass, trying to get a proper look. I immediately lower the collective, get the nose up and pull around into a sweeping turn towards him, helping the aircraft around with the pedals to place the bather on the rescue swimmer’s side. “He’s under! He’s going down. Bather is in trouble! Turn Mike, let’s get to him.” Mark is shouting over the wind now. “Rescue swimmer getting ready. I’m going off comms. I can see him now. He’s in trouble, not coming up. I’ve got him visual!” There is no room for me to turn and stop. “I’m going around, I’m going around. We don’t have room to stop. Get the swimmer ready.” I 39 I raise the collective a little more peering ahead through the sea spray and willing myself away from the water. Funny how everything slows down! I’m vaguely aware of the foam-washed turquoise-green swell moving below me, sucking me in. 40 ease up the collective and bank into a tight left turn over the top of the bather in distress. It feels like I am skidding above the ocean, trying to get some height in the downwind turn as the waves crash below me. We are too heavy for this, as I’ve not yet burned off enough fuel patrolling. Why did the rescue have to come up now? Sea spray blurs the plexiglass as I search for the patient in the waves to my left. I catch a glimpse of the body in the surging swell and bank hard left in a climbing turn. There is not much room coming out of the turn but this is no time for a dramatic quickstop with a heavy aircraft, the sea just below the tail rotor and the wind not yet fully on the nose. I slow as much as I can, trying to keep some power in hand while I shout over the wind to the crew. “Get Mark out. He’s going on the fly! Go when ready. Go when ready!” “Swimmer on the skid. Patient visual!” Kevin is on top of the situation, shouting quick concise commands, keeping me informed. I have problems of my own though. The aircraft is descending and I have to ease in more and more collective. Glancing at the FLI, I see the needle in the top of the yellow, going into the red. Damn! Everything goes into apparent slow motion. I level out of the turn as into-wind as possible. The needle is in the red now. Red line under the Ng but no horn yet! I lower the collective a touch to avoid the horn and immediately pull it back to check the unwanted descent. Waves are breaking under us, sea spray clawing at the aircraft, clouding my vision. Damn! Ditch or pull power. I’m not ditching mate! I raise the collective a little more, peering ahead through the sea spray and willing myself away from the water. Funny how everything slows down! I’m vaguely aware of the foam-washed turquoise-green swell moving below me, sucking me in. “Bip!” the horn beeps loudly in my headset and I instinctively lower the collective fractionally and hold it. The horn goes off as quickly as it “Bipped”. “Swimmer’s leaving the skid. Swimmer gone!” I heard Kevin’s voice somewhere far away amidst the noise and spray. As soon as Mark is off the skid the aircraft lurches upwards. We are flying again! I hold the shallow climb, then lower the collective and get the nose up, turning quickly to see how Mark was doing with the patient in the water. My pulse is racing and my heart feels like it has jumped into my throat, making it difficult to breathe. “Swimmer has the patient. We won’t need the strop. He’s swimming the patient in. Swimmer and patient look OK. Let’s go clear the beach and land,” says Kevin. Below us Mark is already on the beach with his patient, surrounded by a ring of onlookers. I land on the wet edge of the shore-line, drop Elgin and Kevin off with their medic kit, and take off quickly before the crowds can rush in and surround us. Circling lazily over the beach I compose myself and settle into flying again. It seemed to take a while. 5% sheer adrenalin! ABOVE left: This surfer suffered a heart attack while surfing out in the backline. During an aerial patrol the pilot saw people running on the beach and pointing, then the person being swum in and turned immediately to land on the beach. Although initially having no vital signs after being under the water for almost five minutes, the drowned surfer was successfully resuscitated on the beach and is still alive and well today. opposite page: The patient and lifesaver are carried from the surf zone to the shore. The pilot is guided to the shore by the second rescue swimmer from the door of the helicopter. They will be let down at the nearest clear landing area where the paramedic will be dropped off to attend to the patient while the rescue swimmers assist or secure the area and attend to crowd control. 41 The rescue swimmer stands in the ready position in the door. In operational conditions he would be wearing a wetsuit, rescue knife, full body harness, life jacket, mask, fins, and helmet. The paramedic sits in the front seat next to the pilot, and the second rescue swimmer will control operations from the back seat, providing guidance to the pilot and overseeing safety of the rescue operation. 42 Only a few hours later Elgin’s instincts prove correct. Three bathers get caught unawares in a rip current and need assistance. As I am in the hover dropping the rescue swimmer onto the first one, I see a second bather go under on my right. I tell Kevin who quickly gets out on the skid, while further down the rip I see a third bather going under. Elgin, sitting next to me in the co-pilot seat is the only person left in the helicopter. “Here we go! Told you so!” He is already climbing over the seat to jump out the back door. “Glad I’ve got my wet suit on! Just don’t jump in yourself if there’s a fourth one Mike!” he shouts, grinning as he leaps out the open door. We pull four drowning bathers out the surf within a few hours, three of whom were successfully resuscitated. Without the surf rescue helicopter service they would all have been lost to the ocean. The use of helicopters in coastal search and rescue operations along the South African coastline dates back to the 1960s when South African Air Force Alouette III helicopters airlifted passengers from the ill-fated coastal vessel “Seafarer”, which ran aground in a severe winter storm just off Mouille Point, Cape Town. 63 crew and 12 passengers with no other hope of survival in the heavy seas were successfully airlifted and landed safely on the front lawns of the Mouille Point Lighthouse. The ship broke up and sank soon afterwards. Pilots involved in the rescue – among them the legendary “Monster” Wilkins who was also a pioneer of South African civilian surf rescue, were decorated for bravery. Fortunately such dramatic rescues are rare. However, less spectacular tragedies like coastal drownings and small boats in distress were becoming more common at busy beach destinations. A helicopter service was needed and John Rolfe became the first sponsor of a dedicated helicopter surf rescue service run by South African Lifesaving (SAL), with active involvement of the National Sea Rescue Institute (NSRI) and METRO paramedic services coming in towards the end of the initial sponsorship period. The John Rolfe Bell 206B Jet-Ranger’s were soon seen regularly patrolling and performing surf rescue operations along the busy South African coastline. Hunters Gold took over the sponsorship, basing themselves in Cape Town, and over the years the surf rescue service has continued to operate under various sponsors. In 2005, cell phone giants Nokia and Vodacom joined forces with the Netcare 911 group of hospitals and paramedic services, the National Sea Rescue Institute, and South African Lifesaving to form a nationally coordinated Helicopter Surf Rescue Program. Helimax, who The narrow line between life and death often lies in the “5% sheer adrenalin” zone. Safety is always the priority. Mark Ackerman from South African Surf Lifesaving on the left and Kevin Warren, a senior member of NSRI with the EC120B used for Surf Rescue operations along the Port Elizabeth coastline. Mark and Kevin are regional coordinators of the service and were crewmen involved in the rescues described in the article. specialize in Helicopter EMS services, was chosen to oversee helicopter operations and operational bases were identified at five key coastal centers – Durban, Margate, Port Elizabeth, George, and Cape Town. Operational requirements are structured around peak activity periods at each center and the helicopter surf rescue service is now firmly entrenched as a national beach safety resource. Although sponsorship and branding are key factors, the driving force of the service is to save lives. The service’s foundational principle is to make helicopters and specialist rescue crews available to render assistance without cost or obligation to anyone in serious distress within the coastal surf zone, in nearby rivers and dams, or under exceptional circumstances, up to five nautical miles offshore. The narrow line between life and death often lies in the “5% sheer adrenalin” zone. Safety is always the priority. However in the interest of saving lives, crews invariably find themselves operating in the blurred zone between safety and risk, where advanced skills and experience determine success or failure. Although there is a lot of standby time, when things do happen the action is dynamic, fast-paced and crews must be able to function well as a unit under pressure. Because of this crew members are carefully selected and trained. The pilot is in overall command of the operation, responsible for decision-making, aviation and overall safety. The first rescue swimmer is responsible for the water-bound safety of the operation and the rescue of the patient, while the second rescue swimmer is responsible for communications, directing the rescue operation from the air, all operations in the back of the aircraft and visual guidance for the pilot. The paramedic is responsible for care of the patient, all medical equipment and clearing and safety of helicopter landing zones. The program is currently a daylight VFR landbased operation and is operated in accordance with Part 91 and Part 127 of the SACAA CARs. Surf extractions are conducted using a 12 m (40 ft), 18mm (0.75 inch) static strop on an under-slung quick-release cargo hook along with appropriate lifesaving equipment, including mandatory two-man quick entry and exit closed cell foam floatation padding, HA heli-belt with quick release and adjustable buckles, and inflatable life jackets for all crew. All aircraft are fully equipped with standard pop-up floatation. Aircraft currently being used include Eurocopter EC120, AS350 B2 & AS250 B3s, Bell 206B Jet Rangers and a MBB BO105. The call-out procedure is managed by a national heli-dispatch center that responds to emergency calls from around the country and contacts the helicopter pilot and crew with all necessary details to initiate the call out. Because the helicopter surf rescue service is not a Part 138 EMS service, patients in distress may only be airlifted to the safety of the nearest beach or safe landing area. No injured patients, regardless of their condition, may be airlifted to a medical facility. This sometimes places crew under extreme emotional pressure, especially where the patient’s life depends on rapid access to specialist medical help. However these service conditions may not be breached under any circumstances. 43 OUR MISSION We are passionate about our mission because we represent you, a huge collective of likeminded industry professionals. “HEPAC’s goal is to encourage the professionalism and integrity of the ever-changing Canadian helicopter industry by rising to meet the needs and challenges of our members. As a collective group of professionals, we aim to improve the Canadian helicopter industry through strategic planning, targeted lobbying, government and corporate relations, the promotion of safety research and advancements and the improvement in pilot, engineering, employer, customer and regulatory relations. Our core values support professionalism, integrity, safety, success, prosperity and the future of our membership and our industry.” -HEPAC Board of Directors Etue molobor ilisl ut la facincin utat. Duisl ercilit adiam, con utatism odolore raessed dolutat amconsent volesed tat, consectet et. Get in the pilot’s seat and help HEPAC fly! A strong voice for engineers and pilots™ Our mission is to promote the professionalism and integrity of the Canadian helicopter industry by acting as a voice for engineers and pilots. HEPAC SUPPORT HEPAC As harsh as this may sometimes seem, getting the patient to professional help within the first hour – the “golden hour’, reduces mortality by up to 50%, and for every 30 minutes saved in getting a severely injured patient to hospital, the mortality potential will fall approximately three times. The surf rescue HEPAC 95 percent boredom! The rescue helicopter will fly an average of 3 hours per day on coastal patrols, although the crews are on active standby for 10 hours per day. Much of the time is spent at various landing zones along the coastline. service therefore plays a vital role in reducing mortalities among coastal emergency patients by reducing time during the initial extraction from the water, and then providing effective first aid on site. Often an air or road ambulance can be called to the site during the surf extraction to be ready for the patient transfer to a medical facility as soon as first aid has been rendered. This undeniably saves lives. The VODACOM NETCARE 911 Helicopter Surf Rescue Service also plays a vital role in bringing together community protection groups, police services, ambulance services, private and government hospitals and national and local emergency services around a common purpose. The helicopter rescue service is thus seen as an integral binding force among community emergency services. For the crews, the beach-front lifestyle and great flying are certainly bonuses, but the most rewarding facet of the duty must be the satisfaction that, when they complete a sortie having fulfilled their purpose, someone is alive who would otherwise be dead. You just can’t get a more meaningful day’s work than that! n 1044 County Road 44 Oxford Station, ON K0G 1T0 613-258-0252 [email protected] www.hepac.net ce 193 in 38 S D EN 8 70 ep u is 1 9 ANCING customer support through continued investments Our goal is to help you focus on your core business: flying With our continued investments to expand global service and production capabilities, our standard-setting design and engineering, and our 24-7 after-sales service, Turbomeca is committed to helping you take your business to new heights. As your trusted partner, we focus on understanding your business, allowing us to tailor our products, services and policies to ensure we meet your needs every day. In the industry since 1938, Turbomeca is the world’s leading manufacturer of helicopter engines. more at turbomeca.com 45 Living the High Life 46 There’s more to Mallorca than tourists, beaches and beer (although it has to be said that the beer is pretty good!) The small and picturesque Balearic island boasts its very own mountain ranges, making for some outstanding yet demanding flying, as SARAH BOWEN discovers when she drops in on Sloane Helicopters. Photos by mark Bowen 47 ABOVE: Two R44 Clipper II’s flying in formation over the ocean as the sun sets on a calm evening in the beautiful island of Mallorca. right: The challenging approach to land on the grounds of the luxury hotel Son Net in Puigpunyent, which is surrounded by the Tramuntana mountain range. T here’s little that’s worse than bad weather to put a dampener on a day’s flying. UK pilots will be only too familiar with that depressing scenario; if it’s not the lowering cloud base, it’s the gusting winds, the torrential downpours or the poor visibility. Last year’s pitiful excuse for a summer was no exception, with depression after depression costing the UK helicopter industry big time. Luckily for the instructors and students at Sloane Helicopters’ Mallorca base, however, some 350 days of the year are flyable, and “sorry, we can’t fly today” is a rarely called-upon phrase. Mallorca has a stunning natural beauty and there’s no better way to see 48 it than from the air. It has everything from towering mountain ranges to lush green plains, sweeping bays, gorgeous beaches, rugged cliffs and sleepy Spanish settlements. The island itself is only about 40 by 30 miles in size and the annual average temperature is 15.8°C, with an incredible 2,900-odd hours of sunshine each year! Weather aside, the island’s most attractive feature for helicopter pilots has got to be the incredible mountain flying opportunities. The Serra de Tramuntana mountain range is the idea area to experience the thrills of mountain flying, whilst learning about the hazards introduced by the terrain and unpredictable weather systems that come with it. Stretching from the south-west of Mallorca right across to the north, it is over 45nm long and full of confined areas, pinnacles, high altitude landing sites, ridges and valleys – making it perfect for teaching mountain flying techniques. “One of the most important things to consider in mountain flying is the wind. Reading the signs is a key part of the training,” says Jonny Greenall, Sloane Mallorca’s Chief Pilot. “Air is a fluid, just like water. Think of the mountains as the bottom of the stream, and now think of the wind as the water running through the “stream”. You’ll be able to visualize the areas where the fluid (air) is spinning and accelerating in the current and rotors. Try it next time you fly,” Jonny continues, “it will make recognizing areas of turbulence, down-draught and up-draught much easier.” Greenall is one of three commercial pilots and flight instructors employed at the company’s Mallorca base, and the structured mountain flying course they provide consists of a number of exercises, which are each groundbriefed then flown up in the mountains. Fellow instructors Paul Cakebread, also from the UK, and Hallvar Frey from Norway, both fell in love with the place and now live here, flying full-time for the company. The outfit also has a resident CAA Flight Examiner, Alastair Sutherland, enabling them to run entire PPL and type-conversion courses without sending students back to the UK to do their tests. Greenall is also the qualified Ground Examiner and a CAA Radiotelephony Examiner. Puig Major is the highest mountain on Mallorca with a summit of 1,445 m (4,741 ft). It is an area used by the military, and although it is not accessible by road, it’s not flight restricted so flying over it is not a problem. The second highest mountain is Puig de Massanella, with a peak of 1,364 m (4,475 ft), and this can be accessed on foot (although who would want to do that when you have a helicopter?). These mountains are ideal for learning about limited power, orographic uplift, turbulence and for developing the quick thinking that’s required when confronted with the specific hazards associated with mountain-flying. At altitude, not only do you need more pitch on the blades to maintain power due to the reduced density, but you also start to lose engine power (less dense air into the engine means less power out). The R22 and R44 have After an interesting transit across Palma International, a quick detour across the edge of the capital, Palma de Mallorca makes for some fantastic aerial sightseeing. Luckily for the instructors and students at Sloane Helicopters’ Mallorca base, some 350 days of the year are flyable, and “sorry, we can’t fly today” is a rarely called-upon phrase. 49 above left: Landing on a cliff edge is an excellent way to learn how to deal with the effects of turbulence and windshear, as well as finding the ideal spot for a secluded picnic! above right: Some 3,000 feet up a mountain we land the Clipper II in a confined area whilst Greenall briefs our departure route. left: The many stone circles and confined spaces that are dotted around the mountains make it an ideal place for practicing approach techniques and blade and tail clearance. de-rated engines, which assist in giving more power higher up, but during the height of summer you could easily have an outside air temperature in excess of 30°C, which adds to the problem. “When you’re at 4,000 ft your density altitude is going to be somewhere around 7,500 ft. Over-pitching becomes a serious danger and running out of power is not something you want to be doing on the approach to a tight and 50 tricky site,” Greenall explains. Pinnacle Landings are more about reading the signs of wind and power, but one of the other problems is losing the normal day-to-day references you rely on. You always need to leave yourself an escape route – if you don’t, you’ll regret it. There is so much to learn and practice that the mountain courses don’t run for a fixed number of hours – it all depends on how much experience the pilot already has. Five hours is normally a good start but when you get into it you realize you’re only just scratching the surface, and as with all helicopter flying, it becomes totally addictive. My flight with Greenall starts with a quick but tasty “bocadillo de jamón y queso” (ham and cheese sandwich) and a detailed ground briefing, and we then head out to the apron to pre-flight the R44 before setting off to experience the mountains first-hand. Many of the mountain-tops are in cloud and it is quite astonishing to see how quickly the weather systems could change. The TAFs and METARs for Palma don’t really cover the unpredictable mountain weather; one minute a valley can be completely clear and then, almost before you know it, the weather is closing in. It certainly highlights the importance of good decision-making and early planning. The first approach we make is to a cliff-top at Soller, where I can really feel the windshear off the cliffs. Operating in the vicinity of the ocean gives lots of clues to help determine wind direction and indicate where the worst turbulence is likely to be, such as calm or rough patches on the water. Around the Torrente de Parais area there are quite a few stone-circles that can make really good practice landing sites, and since the instructors know many of the land-owners, there are many confined areas of varying difficulty to choose from. With the many landmarks around Palma, navigation isn’t too difficult, except perhaps in the middle of the mountains where all the valleys seem to look very similar to a newcomer. For Greenall though, who knows the area like the back of his hand, it isn’t a problem and he sits there reeling off Spanish place names and pointing at various famous sights including the Michael Douglas and Catherine Zeta-Jones residence (sadly there was nobody home!). Several stone-circle landings later we are ready to retire for the night, and practice our final confined area landing of the day at the luxury Son Net in Puigpunyent, on the eastern slopes of the Tramuntana Mountains. The area is a natural enclave of exceptional splendor, surrounded by pine forests and hundred-year-old oak trees. With high ground all around, this approach requires care and concentration – feeling the approach speed rather than focusing too much on the instruments. Fortunately the wind is coming from a favorable direction, and after a quick power-margin check we descend into the site. The hotel owners are good friends with Greenall (is there anyone he doesn’t know?), and since they always fly in a “neighborly” fashion, the locals are only too happy to see a helicopter now and again. In fact there are over 15 hotels on the island that are helicopterfriendly, so while there are not really any airfields to visit there’s never a shortage of places to drop in to for a cup of tea. So, why did UK-based Sloane Helicopters choose Mallorca? David George, Chairman of Sloane’s, had been a regular visitor to Mallorca for many years and in the early 90s decided to set up a satellite base at Son Bonet, Mallorca’s GA Aerodrome. The company started in 1994 with just one R22 Mariner, but has grown and grown, until today the fleet consists of one R22 and seven R44s, including one Clipper and four Clipper IIs. The company has another R44 on the way before summer, with two more on order for 2008, and an A109 earmarked for Mallorca in the next 18 months. It is a thoroughly professional operation with an impressive fleet and some exceptionally knowledgeable (not to mention tremendously friendly) pilots. The company also plans to operate inter-island and mainland charter operations, as well as offering Commercial Training and Flight Instructor courses in conjunction with their Sywell base. They have found the R44 to be a more popular training machine than the R22, since it costs little more than learning in the R22 and then converting. “The R44 is easier to fly, more stable, and allows the student to get it “wrong” a lot more before we [the instructors] intervene,” Greenall remarks. “For the private owner, the cost is not significantly different to upgrade to the R44, and since we are only training for a market it makes sense to go with what the student wants.” Although based in Mallorca, the company actually operates as a UK CAA TRTO for the purposes of delivering JAA PPL(H) and Conversion Courses on the R22 and R44, so the whole operation runs as if it were an extension of the UK, but with much better weather! They also hold an Air Operator’s Certificate (AOC) for sightseeing tours and aerial photography, and their aircraft fly around 2,000 hours per year in total, with the majority of those hours being training flights. Basic servicing and With miles and miles of scenic coastline to follow there is never a dull moment, and we make our way across the island to find some more landing sites. Pinnacle Landings are more about reading the signs of wind and power, but one of the other problems is losing the normal day-to-day references you rely on. You always need to leave yourself an escape route – if you don’t, you’ll regret it. 51 The ocean comes in handy for working out where the smooth air is, using the tell-tale signs of rough and smooth patches on the water and avoiding the turbulence. maintenance up to and including 50-hour checks are carried out by an on-site engineer. Anything bigger, like 100-hour or annual checks, are performed at Sabadell, in Barcelona; getting the aircraft there is never a problem as there is no shortage of Self-Fly hirers queuing up to do the positioning flights! Of course, students training in Mallorca naturally gain experience in the mountains as they are within such easy reach of Son Bonet, and they are lucky to get that kind of know-how so early in their training. Greenall had already lived in Mallorca for some time when he started flying helicopters back in 1999, with Sutherland as his instructor, so he has been a mountain flyer from the outset. After passing his PPL he decided it was time for a change and gave up his various bars and restaurants in Alcudia to pursue his new career. After flying for a while in the UK, Greenall returned to Mallorca to work for Sloane and in 2007 took over from Sutherland as Chief Pilot. Aeródromo de Son Bonet was the first civil airfield on Mallorca, originally built in the 1920s. In 1946 it became a customs airport and opened to 52 domestic and international traffic, but it could not accommodate larger aircraft as the volume of tourists increased, so these services were transferred to Palma International, which is now the island’s main airport. Transiting Palma International’s two parallel runways was also an exhilarating experience, as you have to fit in around all the commercial traffic (which in the summer months can be busier than London Gatwick!). With the budget airlines fighting for business, getting to Mallorca from the UK is not only straightforward but cheap; in fact a return flight can end up costing less than 15 minutes in an R22, and it only takes a couple of hours to get there. It certainly beats sitting, frustrated, in the crew room waiting for the weather to improve! There isn’t really an ideal time of year to fly in Mallorca as the weather is good all year round, but winter is great because it’s not too hot and, even when it’s cloudy, flying conditions are really good. Craig Parsons, a former student at Sloane’s Sywell operation got a bit fed up with the British weather during his PPL course and decided to head out to Mallorca for a while. “The experience I gained there was invaluable; for a pilot more familiar with the UK’s climate it provided an ideal insight into the effects of “hot and high” without veering to the extremes. The weather, aircraft availability and quality of instruction were second to none.” Parsons came back to the UK to sit his final handling test, but feels privileged to have experienced the mountain flying and the important techniques he was taught. Flying in Mallorca under the UK CAA means there are two sets of rules to abide by. As well as sticking to the UK rules of the air, the company also has the Spanish law to deal with, and it’s a case of following whichever one is stricter. All the aircraft in the company’s fleet are “G” registered and privately owned, and when a student takes a skills test in Mallorca, the paperwork goes directly to the UK, which makes it less complicated to get licences and ratings issued. One of the major differences between flying in Mallorca and flying in many other countries is that it is compulsory to file a flight plan for every single flight, even if you’re just going out to do some hover practice or circuits. At first this seems a little over-the-top, but in reality it’s just like booking out at any large airport, and is simply a case of typing the details into an internet-based form, then opening the flight plan on the radio. “Just don’t forget to close it again,” Greenall remarks, “or you’ll be sitting in the bar that evening wondering why the Super Pumas are out flying!” It’s reassuring, though, to know that someone is out there keeping an eye on you, especially if you do happen to have an emergency out in the mountains – miles from civilization. There is also a strict rule about flying at night; basically you don’t! VFR finishes at sunset (you don’t even get the 30 minutes of civil twilight), and the only people who are allowed to fly after that are the military. Operating a helicopter in the mountains is a remarkable experience, but as with any new skill set, thorough training, practice and an understanding of what to expect is essential to overcome the challenges and possible psychological effects. The common pitfalls, such as inadvertent variations in height and speed due to changes in terrain, apprehension, tension, and relying on false visual clues, will often disappear with experience, so regular and recurrent training is definitely a good idea. So if you’re a helicopter pilot, or would like to be, and think that Mallorca is just another tourist attraction in the Mediterranean – think again – there’s more to it than meets the eye. And if you still need convincing, take a trip to Son Bonet and see for yourself, from behind the controls of a helicopter high in the magnificent Mallorcan mountains! n - Monitor your aircraft’s movements worldwide, with one small box - No install necessary - Velcro on dash and provide power - View tracks from any computer connected to the internet - Configure all reporting parameters on the internet - Affordable satellite tracking for your aircraft +64 6 329 4794 | [email protected] | www.spidertracks.co.nz BREEZE-EASTERN HS-20200 HS-29700 HS-10300 HS-29900 AGUSTA BELL 212/412 AGUSTA A109K2 AGUSTAWESTLAND EH-101 SIKORSKY UH-60Q AGUSTA BELL AB139 EUROCOPTER AS-350B3 EUROCOPTER AS365(HH65) AGUSTAWESTLAND EH101 HELICOPTER RESCUE HOISTS MDHI MD902 700 Liberty Avenue, Union NJ 07083, USA Telephone: (908)686-4000 Fax: (908)686-9292 Web Site: www.breeze-eastern.com 53 Find any bar where the pilots of different helicopter types congregate, and there is sure to be heated debate about the persistent question of the comparative safety of single vs twin engine helicopters… right till the very last beer. In a paper he has researched advising companies on their exposure, MARK OGDEN has Dominique Romet considered the Australian experience to arrive at some interesting observations. 54 R isk can be defined as the possibility of something happening that will impact upon objectives. It is measured by combining the magnitude of potential consequence and the likelihood of those consequences. There are many variables in determining how to make a helicopter operation “safer” or rather, “less risky”, and yes, working on the human factor issues is probably the most significant safety enhancement that the industry as a whole can make, but that perennial question arises. Does having a second engine make flying a helicopter less risky? Multi-engine Helicopters Early helicopters were limited in power and one method by which manufacturers overcame this limitation was to install a second engine, which increased the power margin and permitted them to lift a greater payload. Later, in an effort to improve the chances of a helicopter recovering from an engine losing power (OEI – or one engine inoperative), especially in passenger-carrying operations, this power margin was utilized for carrying a lesser load, but providing an ability to “fly” on one engine. To take advantage of the safety margin that the second engine introduced, what became known as the Category “A” performance standard was introduced. This performance criteria allowed manufacturers to specify a weight under certain conditions that, if a Cat-A “profile” was flown and an engine failure was to occur, enabled the helicopter to be either flown away or landed safely on the remaining engine. It is a basis for certification and well reflects the possible performance requirements when operating to an established airfield, helipad or offshore pad. Cat-A weights and profiles were designed for departure and arrival. Older helicopters often could not meet Cat-A, or if they did their all-up-weight was severely restricted. More modern helicopters, which are designed to carry passengers, have incorporated modern technology designs which will allow fly-away at significantly greater weights, although the weights are usually significantly less than the maximum all-up weights these helicopters can achieve. Although Cat-A provides a safety factor, it does not account for human factor issues or other possible malfunctions including transmission (such as tail rotor) or airframe failure. Often the decision on the use of a multi- or singleengine helicopter depends on the role, environment and operator’s assessment of acceptable risk. ICAO ANNEX 6 ICAO Annex 6 is essentially a set of standards and recommendations relating to the operation of aircraft, that the national regulator should implement. Part 3 to the Annex pertains to the operation of helicopters in international civil aviation, general aviation and commercial air transport operations. The Annex does provide guidance to helicopters engaged in aerial work, and it provides an additional source of information about expected performance criteria for multi-engine helicopters 55 ned dawson ned dawson and a basis for considering performance requirements. The Annex categorizes helicopter performance into three classes, Performance Class 1, 2 or 3. These classes are not to be confused with the A and B performance categories which predate this standard. The ICAO Performance Classes also specify requirements for when a helicopter’s engines are operating normally. Essentially, Class 1 performance provides the greatest level of safety by requiring a multiengine helicopter to be able to land or fly-away safely, cruise or land safely. It also requires the highest level of performance. Class 3, however, only requires that the helicopter operate in an environment where it can perform a safe landing should an engine fail regardless of what phase of flight it is conducting. This allows for an inability to “stay up” during the en-route phase. Performance Class 2 recognizes that forced landing may be required during the take-off or approach phase of flight, however it requires the helicopter to fly at or above the minimum flight altitude and continue to a suitable destination for landing. The important consideration here is that these classes recognize helicopters departing the hover, transiting in forward flight and arriving to the hover. They do not account for helicopters in the hover however, Performance Class 1 allows for a safe arrival onto the ground from the hover 56 IF the ground is suitable. Also, the exposure time for winching is significantly longer than the few seconds involved in departure or arrival. In Europe, there are moves away from requiring single-engine accountability and more towards managing exposure time. The JAA approach (JAR-OPS 3.480) is to consider exposure time, which is the actual period during which the performance of the helicopter with an engine failure does not guarantee a safe landing or safe continuation of the flight. Maximum permitted exposure time is the period during which engine failure risk equals overall system safety. Acceptable risk for the event is 5 x 10-8. Power loss risk analysis (JAR-OPS 3.517(a)) Time (seconds) = 18 x K / n x Pr x F Where n = number of engines Pr = failure rate per 100,000 flt hours K and F are constants normally approximately equal to 1.0 Analysis of this equation reveals the interesting point that increasing the number of engines does not reduce exposure time. For example, the CT7 (as equipped in the 214ST) has a demonstrated reliability over 30+ million hours. Its engine-caused in-flight shutdown rate, is demonstrated as one occurrence in 500,000 flight hours The permitted exposure time for 5 x 10-8 Max Time = 18/(no. of engines x failure rate) = 18/(2 x 0.2) = 45 seconds It is arguable that the second (or third) engine on a helicopter makes it more reliable because there is, in probability terms, a greater chance of having an engine fail. left: Statistics related to the relative safety of multi vs single engine can be contentious. ned dawson opposite page left: Engine monitoring systems on such as those found on the later Eurocopter models provide information that should lower the chance of engine failure. opposite page right: ICAO Annex 6 provides guidance on helicopters being used in Aerial Work. Reliability The reason for introducing Cat-A was to take advantage of the perceived improvement in safety that multi- vs single-engine brings. The premise behind this stems from the early days of turbine engine helicopters, where the engines were not as reliable as the modern units and monitoring systems did not exist. It is arguable that the second (or third) engine on a helicopter makes it more reliable because there is, in probability terms, a greater chance of having an engine fail. Statistics however, indicate that twin-engine turbine helicopters have a lower accident rate than single-engine turbine helicopters, although the statistics related to the relative safety of multi vs single can be contentious because the accident rates, particularly in the USA do not always account for the types of flights or operations, or even the cause of the accidents. US offshore data supports the notion that the safety of flight is improved with the use of a twin-engine helicopter but it should also be noted that the primary cause of helicopter accidents in this sector was not engine failure but flight into terrain or an obstacle, which is a predominantly human error event; however engine-related factors were causal in nearly 20% of the accidents. The Australian Experience The Australian information was examined because it is a fairly “middle of the road” aviation environment when it comes to activity, aircraft types, training, weather etc. In determining the risk associated with operating single or multiengine helicopters, it is important to understand the likelihood of an engine failure. Although it may be expected that transmission problems would be higher in twin-engine helicopters due to increased complexity, there is no evidence suggesting that the twin-engine helicopter suffers any higher transmission-related accident rate than singles. What is less apparent is what the consequence will likely be, as this depends on such things as the environment, ambient conditions, power margins and pilot decisionmaking and flying skill. In Australia, the average chronological age of the single-engine turbine fleet is increasing. The average age of singleengine turboshaft helicopters has increased from 16 to 23 years over the 10 years from 1995 to 2005. Along with the increase in average age, there has been a substantial increase in the size of the fleet (190%). The average age of multiengine helicopters in Australia increased from 12 to 15 years. There was no attempt to break the information down by aircraft or engine type in order to keep the information spread over as many types and types of operations as possible. Additionally, in the 15-year window examined, the profile of the industry changed significantly with Eurocopter and Agusta types becoming more prevalent and more twinengine helicopters being used. Nearly all of 57 It seems a properly maintained and operated twin-engine helicopter with Class 2 performance represents a lower risk than a single-engine helicopter ned dawson during takeoff, transit and landing. the occurrences however, involved helicopters that were performing passenger charter or conservative aerial work operations. In the 15 years to 2006, ATSB reported that there were 32 engine failure occurrences in single engine turbine helicopters. These occurrences excluded pilot-induced failures but included mechanical and maintenance failure; failures over which the pilot had little control. Of these, 15 did not result in an accident (minor or nil damage). During the period, the Australian single-engine turbine fleet flew about 1,170,460 hours. The engine failure rate therefore represented one every 36,576 hours whereas the accident rate (as a result of an engine failure) represented one per 68,850 hours. Of the 15 occurrences that did not result in an accident, 11 occurrences were successful auto-rotations (pilot skill and suitable terrain being the reasons for the successful landings) and four occurred in the hover or on late approach. The twin turbine fleet flew 569,867 hours and there were no accidents attributable to engine malfunctions or failures. However, there were 14 engine failures representing a failure rate of one in 40,705 hours or about 11% less often than the single-engine turbine rate. Overall, there had been 55 engine shutdowns, 41 were 58 “precautionary” due to such considerations as a malfunction, loss of power or chip indication. Improving The rates improve if the data for the last five years is considered. Single-engine failure occurrence rate represents a failure rate of one in 44,071 hours (20% improvement) and an accident rate of one in 80,797 flying hours (17% improvement). The twin turbine engine failure rate also improved by 28%, to one in 51,959 flying hours. Based on the Australian data, it appears that the chances of having a turbine engine failure is around one in 40,000 flying hours whether the helicopter is equipped with one or two engines. Smaller engines would be expected to have a mechanical reliability of around one in 100,000 flying hours and the larger engines should have a rate of around one in 400,000 flying hours. The reduced “reliability” actually being observed may be associated with inappropriate maintenance or handling practices. The consequences, however of the engine failing have been shown to be significantly less in the twin turbines with no accidents in 15 years, where the single-engine turbine ned dawson accident rate is one in nearly 70,000 hours. That single-engine accident rate could have been significantly higher had the helicopter been over unsuitable terrain or if the pilot skill had not been high enough to affect the engine off landing. The occurrence information also revealed that the majority of engine failures in singleengine turbine helicopters occurred in the cruise. Of the 32 occurrences, 19 (59%) were in the cruise, eight were while maneuvring, five (16%) in the descent or approach, and none occurred during climb-out/takeoff. Interestingly, the twin-engine figures reveal statistically similar trends. Of the 14 engine failures, 7 (50%) occurred in the cruise, 4 were on climb-out or takeoff and 2 (14%) in the descent or approach. When the precautionary shutdowns are included however, the vast majority of shutdowns occurred in the cruise portion of the flight. Forty-three (78%) were in the cruise, eight on the climb-out (15%) and four (7%) on descent/ approach. It should be noted that to reduce the chances of a multi-engine helicopter having both engines fail, then ideally, maintenance on the engines should be “staggered”, i.e. maintenance should not be conducted at the same time on both engines. Also, the engine lives should be staggered to preclude an hours-in-service problem arising on both engines at similar times. So, what does it all mean? Multi-engine helicopters have a lower accident rate than their single engine brethren for a variety of reasons. The Australian experience appears to indicate that although engine failure rates are similar between single and twin-engine helicopters, the accident rates (as a result of engine failure) are significantly higher in singles. The greater level of safety of the twin-engine helicopter is afforded during forward flight when the remaining engine provides sufficient performance to maintain flight. Consequently, it seems a properly maintained and operated twin-engine helicopter with Class 2 performance represents a lower risk than a single-engine helicopter during takeoff, transit and landing. Most twin-engine helicopters carrying a useful payload will not maintain an out of ground effect hover with an engine not operating. If the hover is high enough, the conditions suitable, and the pilot well trained, a twin-engine helicopter may be able to achieve fly-away from the hover with one engine inoperative. It may also provide a softer arrival on the ground if a fly-away is not possible depending on the ground conditions and surrounding 59 Rob Neil Whether one or two engines often depends on if operating over ‘hostile’ terrain. 60 obstacles. Alternatively, like the single-engine helicopter even though the twin-engine helicopter may not be able to “fly away” with an engine inoperative, depending on the power margin, it may have a “controllable” landing. A single-engine helicopter provides no alternatives to arriving on the ground. The greater the margin between power required and power available, the more energy will be available in the rotor to cushion the landing. When considering risk, although the likelihood of an engine failure in single or twin engine helicopters is similar, the consequence of the engine failure can be significantly different depending on the environment, helicopter power margin, and pilot training and skill at the time of the occurrence. It should also be noted that there are many other considerations when determining risk or examining ways to lower risk exposure. In helicopters, the engine is but one critical component. Transmission systems and the pilot are also critical to the safe operation of a helicopter. Any risk assessment depends largely on the context of the operation and the acceptable levels of risk an organization is prepared to accept. For example, some oil companies will only use twinengine helicopters for transporting its personnel in a hostile environment because their risk assessment assesses the twin-engine helicopter as providing less risk. However, those companies also demand high standards of operational compliance, safety management systems and standards of maintenance. Yet the most recent revision of ICAO Annex 6 Part 3 also strongly supports the idea of Class 1 or 2 performance when operating in a hostile environment. Oil and Gas Platform Operators’ standards are similar. Despite this, other operators are prepared to accept the risk associated with the engine failing in single-engine helicopter in a cost vs risk analysis. This discussion has focused on the single vs twin-engine argument only because the discussion is about how “safe” a single-engine rotorcraft really is. The question, then, is really, “how safe compared to what?” ...compared to a twin? Regardless of whether a single or twinengine helicopter is being operated, the relative safety or levels of risk are more highly influenced by other factors including training, operating and maintenance standards. This is one reason why the introduction of Safety Management Systems is being mandated by ICAO. All the foregoing, of course, will fail to preclude endless hours of fruitless debate between proponents of each side, for which many bar-owners will undoubtedly be eternally grateful. What all the best pilots realize is a fact that has never varied. Which is the safest? Whichever it is that gets you onto the ground in one piece. More often than not, the machine matters far less than how you operate it. n I nventory S upported M aintenance R epair & O verhaul ● Exclusive Provider of ISMRO™ ● More Than 50,000 Line Items In stock For Sale Or Exchange ● 21 Sales Professionals Handling Day-To-Day Operations ● More Than 50,000 Square Feet in Two Locations — Atlanta & Vancouver ● MRO Capability On Over 8,000 Different Items ● 1,000+ Linear Feet Of Benches W/ Over 650 Pieces Of Test Equipment ● Distributor For 16 Different Manufacturers ● Aircraft Supported Include Agusta, Bell, Eurocopter, MD & Sikorsky Atlanta (404) 768-9090 Fax: (404) 768-9006 Vancouver (604) 542-8820 Fax: (604) 542-8829 “Others sell parts, WE SELL SUPPORT” www.heliparts.com ● www.heliparts.ca www.heliparts.com ● www.heliparts.ca New Kid on the Block The development of a totally new “clean-sheetof-paper” helicopter design is a relative rarity anywhere in the world. For the first time in the history of Russia’s helicopter industry, an established manufacturing facility has managed to independently design and certify an all-new type. ALEX MLADENOV reports on the Ansat from Kazan Helicopters – a machine apparently destined for major success in a wide market. Photos by Kazan Helicopters via Alexander Mladenov 62 63 Mirosl av Gyurosi via Ale x ander Ml adenov The basic version of the Ansat has accommodation for two pilots and nine passengers. In EMS configuration, the cabin can house two stretchers and two medical attendants. 64 T he twin-engined Ansat was designed to be a sufficiently advanced, yet simple and reliable helicopter; a costeffective compromise between innovative and well-proven design solutions in order to achieve good performance at an attractive price. The baseline Ansat made its maiden flight in hover on 17 August 1999, the first forward flight followed on 6 October that year and it was granted its Russian type certificate on 29 December 2004. Designed and built from scratch at Kazan Helicopters of Kazan, the most successful helicopter manufacturer in Russia, the Ansat is now in service with several Para public and government customers, and has a designed 20,000-hour airframe service life.. Weighing in at 3.3- onnes, the rotorcraft is aimed at the projected huge government market (military and police), Para public (EMS and SAR) and commercial (gas pipeline, aerial patrol, air offshore oil platform re-supply) sector in Russia, most of the CIS states and Russia’s loyal client countries in the Third World. Korea’s Department of Forest Management was the launch customer for the type, receiving its first two Ansats in baseline configuration in December 2004, to be used in the surveillance and firefighting roles. Currently, the Ansat order book amounts to around 20, with orders received from both domestic and foreign customers such as government organizations in South Korea, Venezuela and Laos. By 2010, Kazan Helicopters aims to achieve Ansatrelated annual sales amounting to $US 30-40 million. The initial design work on a light twin-engine helicopter to succeed the Mi-2 began at Kazan Helicopters in 1993. The company’s marketing studies identified a need for an advanced multifunctional helicopter with a payload capability of between 2,202 and 2,863 lb (1,000-1,300 kg). The Ansat program was seen as a good chance for the Kazan-based company, then producing only the Mi-8MT/ Mi-17 13-tonne helicopters, to diversify its production portfolio and carve a profitable niche in a new market segment. Initially, Kazan Helicopters’ management attempted to convince Mil Moscow Helicopter Plant – then Mirosl av Gyurosi via Ale x ander Ml adenov the premier helicopter design house in Russia – to join forces in the development and certification of a utility rotorcraft in the 3-tonne class. These efforts, however, proved fruitless as the Moscow-based design authority was reluctant to enter into such a partnership in the turbulent post-Soviet times. Ultimately, Kazan Helicopters adopted the bold decision to go-it-alone with the development effort, investing its own funds as well as obtaining funding support from the government of the state of Tatarstan, an autonomous state located in the southern part of Russia. It is noteworthy that Kazan Helicopters has enjoyed a healthy order book for its Mi-17 family of helicopters over the last two decades and therefore had the needed funding for the Ansat development. The first step in the process was setting up its own design house (until the mid-1990s, Kazan Helicopters lacked any sophisticated design capabilities) and its final approval as a design organization was granted in 1997. Definition of the design concept for the new helicopter was completed in 1995 and a fuselage mockup was exhibited for the first time at the 1995 Paris air show. By that time, the program was presented as a co-operative venture between Kazan Helicopters, Aviacon Scientific and Production Center (responsible for the rotor) and Aeromekhanica (responsible for the transmission). From the outset, the Ansat was designed in compliance with the new Russian AP-29 Cat-A airworthiness requirements, said to be equal to US FAR 29. The name Ansat, which in Tatar language (the city of Kazan is the capital of Tatarstan) translates as light, simple or comfortable, suitably describes the basic design concept. A typical example of this pragmatic and perhaps somewhat conservative design approach is the airframe design assembly; it has a classic all-metal structure, similar to that adopted for the well-known Mi-8/17 family; composites were used only for some non-load bearing elements. Access to the nine-seat cabin is provided through four doors and the aft fuselage is fitted with a hatch to load baggage or stretchers. The basic version accommodates two pilots and eight passengers, or one pilot and up to nine passengers. In the EMS configuration, the cabin can house two stretchers and two medical attendants. In cargo configuration the Ansat can lift 2,912 lb (1,300 kg) externally or 2,240 lb (1,000 kg) in the cabin. For VIPs, the cabin has two increased-comfort seats and two more are provided for the attendants, while the SAR version, developed for a customer from South Korea, is equipped with a hoist, featuring a lifting capacity of up to 660 lb (300 kg). The rotor system is a state-of-theart design for today’s Russian helicopter industry. It can be viewed, however, as well-established technology for Western helicopter manufacturers, The Ansat-LL is a flying test bed ordered by the Russian Navy. Delivered in mid2005, it is currently used by the Radar-MMS company in St Petersburg for testing of radar- and IR-based seekers for ship-launched cruise missiles. The name Ansat, which in Tatar language (the city of Kazan is the capital of Tatarstan) translates as light, simple or comfortable, suitably describes the basic design concept. 65 incorporating a four-blade main rotor with glass-fiber blades, a glass-fiber torsion bar and a two-blade tail rotor. The lack of a suitable Russian or Ukrainian-made engine at the time of development led to the adoption of the proven Pratt & Whitney PW207K with FADEC, rated at 470 kW (630 shp) for take-off, 410 kW (550 shp) max continuous power, 529 kW (710 shp) for 30-seconds and 491 kW (659 shp) for two-minute OEI operations. The first two Ansats, however, were powered by the less-powerful PW206C. Undoubtedly, the aircraft’s most striking feature is its fly-by-wire (FBW) control system, a first for a light helicopter; so far only Eurocopter is known to have tested such a system for a light helicopter, but this EC 135 Drop Off Your Aircraft. We’ll Do The Rest. From component overhauls and repairs to reconstruction and completions, now Heli‑Mart has a total, single‑source solution to fully meet the support needs of MD Helicopter operators worldwide. 800-826-6899 www.helimart.com Please visit us at Heli-Expo Heli‑Mart 1413 California Aero Components 1515 Phoenix Heliparts 1517 any part. any service. any place. any time. HM P2 HO.indd 1 1/29/08 2:42:29 PM is considered a pure research vehicle. The FBW is also a first for the Russian helicopter industry. The main advantages of the FBW system are the ease with which it can be adapted to suit a wide range of missions, and the benefits of lower weight and greater reliability thus enhancing flight safety. Lower pilot workload is said to be another positive feature of the FBW system. The Ansat’s KSU-A FBW system, developed by the Avionica Company in Moscow, features quadruple back-up from digital and analogue computers. The flight deck is said to be a very modern one although once again it should be noted that this is relative to Russia’s current ergonomics standards, as the solutions can be viewed as less advanced than those adopted for the modern US and European light twin helicopters. The instrument panel features a pair of multi-function color displays in front of the pilot, who occupies the left seat. The Ansat has been initially marketed to military, Para public and government organizations in Russia, most of the CIS republics and some of Kazan Helicopters’ traditional foreign customers such as China, Egypt, Libya, Venezuela and Algeria. The manufacturer claims that Ansat’s main advantage, when competing against well-established rivals offered by the Western world manufacturers, is its good performance offered at a lower price. Despite its high-tech nature, the Ansat is promoted as a considerably cheaper solution than its rivals, thanks to Russia’s much lower labor cost (apparently three-four times lower than that in North America and Western Europe). However, the technical difficulties experienced during the design stage and protracted flight test and certification program, combined with the expensive (by Russian standards) power plant, eventually led to a substantial increase in the base price – initially set at $US1.5 million a unit, currently it is estimated to be above $US3 million. The company’s former director general, Alexander Lavrentiev, cites “commercial confidentiality” as the reason for Kazan’s failure to publicly quote a price for the Ansat. The first Ansat prototype was K azan Helicopters via Ale x ander Ml adenov The third Ansat referred to as the preproduction prototype took to the air on 27 December 2001. It saw active participation in the type’s certification program which encompassed around 600 flights assembled in 1997 and was intended for static ground testing. By mid-2003 it was reported to have amassed over 800 hours of various tests. The second prototype (airframe 02 and later re-serialled as 902) was used for flight testing and making the maiden hovering and horizontal flights. In 2005 it was modified into the Ansat-2RTs armed scout with stepped tandem cockpits. The third Ansat (airframe 903), referred to as the preproduction prototype, took to the air on 27 December 2001. It was used in the type’s certification program encompassing some 600 flights. Originally, the certification program was scheduled for completion in late 2003, but was finally reported as completed in December 2004. The Ansat is certified in its baseline singlepilot version for Category-A passenger transport. Alongside the certification program, Kazan Helicopters continued trials as most of the airframe components were initially approved for 500-700 hours time between overhauls (TBO), while the rotor drive train components had a 300 hour TBO. The aim was for the TBO to be extended to 1,000 hours for the production examples; in 2007 it was stated that critical components’ TBO is scheduled for extending to 1,500-2,000 hours. In 2007 and early 2008, the main development efforts were aimed at achieving supplemental type certifications for a number of Ansat configurations, amongst them the executive transport, training, firefighting, SAR, and with the emergency flotation system. After the South Korean procurement of five Ansats for the Korean Department of Forest Management and one more for the Korean Police, deliveries commenced to local customers. Firstly, an Ansat configured as a flying test-bed (dubbed Ansat-LL) was procured by the Russian Navy on behalf of Radar MMS Company in St Petersburg. Radar MMS utilize their Ansat for airborne trials of various types of radar and IR seekers under development for shiplaunched missiles. Four VIP-configured helicopters were ordered by Rossia State Transport Company, with the first pair slated for delivery in early 2008 (it was originally planned for delivery in late 2007 but there are no reports t hat this has taken place) and was publicly revealed at Heli-Russia Show in May 2008. In April 2007, Kazakhstan became the first defense export customer, with an order for an undisclosed number of helicopters to be used for the training of military pilots at the Aktubinsk-based flying school. The Ministry of Health of Tatarstan is the launch customer for the EMS version of the Ansat. Other export customers announced in 2007 include Laos and Venezuela (with an initial order of four helicopters). In December 2007 it was announced by Kazan Helicopters’ representatives that an agreement to sell the Ansat to an undisclosed Iranian oil company had been reached. The Iranian order numbered six helicopters and there were options held for six more, with deliveries slated to commence in the second half of 2009. Even China has expressed interest – not only for procuring Ansats but also for establishing a local assembly line, but to date no details have been disclosed. Kazakhstan is also reported to have expressed a willingness to establish a joint venture company with Kazan Helicopters for Ansat’s local assembly for Kazakhstani customers. The Ansat-U is the military training derivative, developed for the Russian Air Force as its new-generation training and liaison platform. Kazan’s light twin was announced as the winner of the MoD tender process as early as in 2001. There, it competed 67 K azan Helicopters via Ale x ander Ml adenov The Ansat is captured by the camera in flight during tests of the emergency-float installation. against the single-engine, pistonpowered Mi-34 (proposed by a team made by Mil Light Helicopters and Progress company) and the twinturbine, coaxial-rotor Ka-226 proposed by Kamov. The contract for the Ansat-U development and testing was signed between Kazan Helicopters and MoD in 2002. The brand-new 3.3-tonne class helicopter is earmarked to replace both the Mi-2 and Mi-8, currently used in the initial and basic pilot-training role at the Russian Air Force’s Sizran Aviation Institute but considered as obsolete. The Ansat-U features a nine-seat cabin, and when used in the cargo role, it reportedly can transport up to 2,900 lb (1,300 kg) on external sling or 2,230 lb (1,000 kg) in the cabin. It has a maximum take-off weight of 7,360 lb (3,300 kg), a maximum speed of 151 kts (280 km/h), a cruising speed of 116 kts (215 km/h) and an economic speed of 63 kts (115 km/h). The practical ceiling is 18,700 ft (5,700 m) and the “brochure” range is claimed to be 343 nm (635 km) with flight duration of up to 3.3 hours. 68 Pratt & Whitney’s PW207K is also used to power the initial military derivatives of the Ansats, and the FADEC has yet another major advantage in the training role, enabling the simulation of one engine inoperative (OEI) conditions without the need to shut down one engine. The Klimov VK-800 turbo shaft, a further scaled-down derivative of the VK-2500 is proposed as an alternative engine for the followon batches of the Ansat-Us ordered by the Russian Air Force and also for those export customers who are reluctant to use the PW207K due to political or other considerations. The VK-800 is rated at between 900 and 1,000 shp depending on the version in OEI conditions, 800 shp for take-off and 450-600 shp for cruise flight. The engine is scheduled for certification in 2009, which means that it could be used to power production-standard Ansats from 2010 at the earliest. The VK-800 price announced by Klimov in 2007 is 210,000 Euro (around US $302,000 at the exchange rate used in late December 2007). The reprogrammable FBW control system is advertized as being very useful for the Ansat-U’s training role, as it makes possible the simulation of the handling characteristics of larger helicopters such as the Mi-8/17 and Mi-24. Lower pilot workload and improved control and stability, reducing its susceptibility to gusts, are other welcome benefits of the FBW system. The Ansat-U prototype was made by “militarizing” the fifth prototype of the baseline Ansat, adding an additional instrument panel in front of the instructor. The Ansat-U’s first prototype is equipped with skids, but all following machines will feature a wheeled undercarriage with steerable nose unit; this scheme is said to be much more useful for training student pilots who will then convert to the Mi-8, Mi-24 and Mi-28. It was originally expected that the first prototype be flight-tested at the end of 2004 but the program suffered from delay due to the lack of development funds. The first Ansat-U is expected to be handed over to the Russian Air Forces for testing and qualification in early or mid-2008. So far, funding has been provided for the manufacture of only two helicopters, priced at US $1.4 million each. A rotor-blade anti-icing system is also in development for the military derivatives of the Ansat; it will be also offered at a later stage for all versions. The Russian Air Force is expected to acquire a total of 100 Ansat-Us by 2015, but this plan has still to secure full funding for testing and production. As many as 12 are planned to be delivered as an initial batch in 2009. Kazan Helicopters believes that entry into Russian Air Forces’ service will be a huge boost for the type’s military and Para public various export prospects with the company’s established customers. Not only has Kazan Helicopters succeeded in a brave venture that strengthens their position at the forefront of Russian rotorcraft manufacture, but also their sound and commercially attractive design has generated strong export interest and sales, and civil and military success in the home market looks almost certain. Ansat may mean “light” but this project is no lightweight; it seems that Kazan’s new kid on the block has hit a home run! n Some like it HOT.... ...we don’t! Our systems can be found in operation throughout the world. From the United States to Canada, Mexico, Korea, Taiwan, Spain, France, Portugal, Italy and Russia. Working hand in hand with the customer, we will help you to get the best built product, save you money and help take care of the environment! Make the right choice. Choose Isolair Helicopter Systems today! www.isolairinc.com - [email protected] Isolair Helicopter Systems • 1620 N.W. Perimeter Way • Troutdale, Phone: 503-492-2105 • Fax: 503-492-2756 Oregon 97060 under Pressure! No pilot likes to think of his machine becoming un-controllable during flight, but in recent years there has been a series of hydraulic system-related accidents involving the AS350 squirrel. PHIL CROUCHER examines and explains the system, providing some timely Dominique Romet advice on the issues. 70 71 1. An AS 350 BA operated by Heli USA crashed near Peach Springs, Arizona on 11 September 2002, after the pilot reported that the controls were not responding. The NTSB found that the hydraulic pump had failed from lack of lubricant, and that while the pump had become severely worn and rusty, the pilot had also failed to follow the correct hydraulic failure procedures. damiano gualdoni 2. A n AS 350 B3 operated by Native American Air Ambulance crashed near Scottsdale, AZ on 2 November 2003, after the pilot inadvertently hit an hydraulic switch and was unable to stop the resulting spin. 3.Hydraulic failure was also listed as a cause in a crash involving an AS 350 B2 operated by Texair Helicopters on 24 May 2000 in Patterson, LA. It flipped on its side on landing after the pilot had inadvertently turned off the hydraulics after a tail-rotor failure. A lthough there are some problems with the AS350’s hydraulics, as discussed below they can be mitigated somewhat with better training. This article aims to explain both the system and the recommended procedures as simply as possible, in the hope that this will minimize the consequences of future system failures. The hydraulic system reduces pilot workload by making the controls lighter in normal flight, as the control forces involved (which increase with speed) would be severe without its assistance. The system is designed to give sufficient time, in the event of a hydraulic failure, to get the speed back below 65 kts, where the forces are controllable. 72 On AS350 models without a second hydraulic system, this is possible through the use of accumulators, which are sturdy containers attached to each hydraulic jack (servo) in which a diaphragm separates hydraulic fluid under normal system pressure from pressurized nitrogen, which is charged up on the ground. When hydraulic pressure drops, this pressurized nitrogen expands against the bladder to force out the fluid on the other side, keeping the system pressurized for a short while. Depending on how much and how harshly the controls are used, the accumulators will usually bleed off their stored pressure in about 20-30 seconds, which is time enough to bring the speed back and reduce the control damiano gualdoni forces, but you can expect the loads to increase again when you slow down for short finals. For this reason, you should always run-on with about 10 kts over the disc – do not try to hover. Accumulators do not discharge at the same rate (which is why the hydraulic cut-off switch on the collective should be turned off, to positively discharge them) and they only work if there is fluid in the system. You have no way of knowing what you have until you land and that’s the reason for a run-on landing on any machine. It is not a good practice to try and land on accumulator pressure alone. You might easily find yourself in the hover with only fore and aft control. Once the accumulators have discharged, you are in “manual mode”, at which point you must operate the hydraulic cut-off switch (on the collective) to activate solenoids that will ensure that the accumulators are completely discharged simultaneously, so you don’t get an asymmetric condition. System components The system comprises: l Hydraulic reservoir (1) mounted on the rear of the main gearbox. This holds 2.1 liters of hydraulic fluid and feeds the pump by gravity (total system volume is 3 liters). l l Belt-driven gear-type pump (2) on the right-hand side of the main gearbox compartment, just behind the transmission. The belt is driven by the engine-main gearbox shaft. There are two types of belt (which are not interchangeable), either green Filon or the longerlasting black V Polychloroprene Polybutadiene. This pump can produce a flow rate of 6 liters per minute, even down to 170 NR, although it can always produce something whenever the main rotors are turning. However, in cold weather (under -25°C) the hydraulic fluid’s viscosity increases and the belt can start to slip as it tries to cope. Friction eventually causes the belt to deform and stop turning the pump. It may even slip off the drive wheel. Hydraulic distribution block (3), on the right side of the main gearbox. This receives pressurized fluid from the pump through the filter. The distribution block houses the filter clogging indicator, pressure relief valve (12), hydraulic pressure switch (10) and the hydraulic test solenoid (11). The filter has above left: Accumulators are sturdy containers attached to each hydraulic jack (servo) in which a diaphragm separates hydraulic fluid under normal system pressure from an inert gas which is also under pressure. The hydraulic system reduces pilot workload by making the controls lighter in normal flight, as the control forces involved (which increase with speed) would be severe without its assistance. 73 above: There are three main servos: a forward one for pitch control, and left and right ones for roll. A fourth is used on the tail rotor. right: AS350 Hydraulic System Schematic. no bypass capability, so if it gets clogged, the fluid will not reach the servos. An indicator button will extend from the bottom of the filter housing when there is a 2.7 bar pressure differential across the filter, indicating potential clogging. The pressure relief valve (12) opens at around 40 bar to allow fluid to get back to the reservoir if system pressure gets too high. The lowpressure switch (10) activates when the pressure drops below approximately 32 bar, illuminating the red HYD warning light on the warning panel and producing a continuous tone from the horn. l Four servos* (4). There are three main servos: the forward unit for pitch control, left and right servos controlling roll and a fourth (in the forward end of the tail boom just under the tail rotor drive shaft) for the tail rotor. The AS350-B1 & -B2 models have a yaw load compensator which assists with pedal inputs after a hydraulic failure, as the pedals would be very hard to manage otherwise. Each main rotor servo includes a servo control manifold (5), which contains a non-return valve (6), an accumulator (7) and an isolation solenoid valve (8) that allows pressurized fluid to bypass the servo and return to the reservoir once the switch on the collective is operated. The non-return (or * 74 There are two servo manufacturers – Dunlop and SAMM. Although their products are functionally identical, Dunlops allow better control fore and aft if the hydraulics fail, and leak a lot less. Also, Dunlops only have a locking pin on the pitch servo. Each machine will have all servos identical. one-way check) valve (6) traps any pressure created by the accumulator in the lines after a pressure failure. Hydraulic fluid enters the servo through the one-way check valve. The fluid is routed to the accumulator, then to the inlet pressure port of the servo housing through a banjo screw, which is hollow, to allow the servo control manifold to be attached to the servo while allowing hydraulic fluid to flow. The slide valve routes the fluid to the relevant chamber, according to the desired direction of movement, while allowing any fluid from the other chamber to be expelled through the banjo screw. Unlike the main servos, the tailrotor system is designed to provide an almost unlimited supply of reserve pressure. If the pressure within it exceeds 55 bar, the check damiano gualdoni valve opens the pressure line to allow a partial hydraulic flow as the servo piston returns to the extended position. This prevents hydraulic locking and causes the stored pressure to be reduced. l Various: Lights, Buttons, Switches and Horns in the Cockpit The hydraulic oil lines run through the inside of the main gearbox, keeping the fluid warm. However, if you are not moving the controls (meaning that no oil is circulating) when sitting on the ground for a while, the oil in the servos may cool enough to cause any water contamination to freeze. If the hydraulic system fails, the collective CUT-OFF switch is used to simultaneously depressurize the accumulators, allowing hydraulic fluid back to the reservoir and a smooth transition to manual control. A toggle switch labeled HYD TEST (previously ACCU TEST, on the switch panel) tests the main- and tail-rotor servo accumulators by opening test and tail-rotor servo solenoid valves, causing hydraulic pressure to drop and the warning light and horn to come on. This simulates a failure of the hydraulic pump and is a method of testing for the asymmetric problem; it is actually the accumulator test. Move the cyclic until the accumulators deplete and make sure the assistance stops symmetrically. When there is no hydraulic pressure and you push this button, you will purge the accumulator in the yaw compensator which is standard procedure after shutdown. Note:You should never have both switches off at the same time. NEVER touch the console HYD button in flight when a real hydraulic failure is suspected, as it will render the tailrotor unusable and you will be outside certification limits. You will certainly need heavy pedal pressure and the yaw to the left may well be uncontrollable when you reduce airspeed (not to mention a heavy cyclic). The B3 has bigger tabs on the tail-rotor blade than the B2, so this condition will be exacerbated. If you have a hydraulic pump failure (in a machine with the yaw compensator) and engage the HYD TEST button, you will not get the compensator back as you have depressurized it. With no working pump, it cannot be re-pressurized! The only time you should touch HYD TEST in flight is when you suspect a tail-rotor control problem and you need to have them somewhere near neutral (your pedals might be stuck). You might not get control back, but you do at least have a chance to run it on. Test procedure for examiners Activate the warning light button (and the horn) and call out the emergency. The student should slow down to 65 kts and switch off the HYD switch on the collective, then slow down a bit more to about 55-60. If correctly tested at startup, the accumulators should provide enough pressure and time to slow to 60 kts, so this should be transparent, whether or not the HYD-TEST button is pressed. As well, this avoids possible confusion in a real emergency. Thus, if the hydraulics have a problem while you are practicing failures, the tail-rotor stays controllable and a non-hydraulic landing should be no problem. If you had the HYD-TEST switch pressed or locked, you would add a tail-rotor control failure to the emergency! Note:Some amendments to various flight manuals correctly state that you should operate the collective switch, but not that you should reset it! If you have a hydraulic pump failure (in a machine with the yaw compensator) and engage the HYD TEST button, you will not get the compensator back as you have depressurized it. With no working pump, it cannot be re-pressurized! 75 damiano gualdoni roll servos. If you feel any control feedback, the accumulators need checking, as they are not doing their job. Hydraulic System Checks The flight manual requires the following two hydraulic system tests before each flight. l Accumulator Test This allows you to check that the accumulators would actually provide assistance if the system fails, plus the HYD warning light and horn. The check l also tests that the solenoid valve on the yaw load compensator body operates correctly. The check is done at flight idle. l Check that the collective is securely locked down by the locking strip. Adjust the cyclic friction to the level used in flight. l Cut off the hydraulic pressure with HYD TEST. The solenoid valves on the distribution block and yaw load compensator should open. l The pressurized fluids will return to the reservoir, and the flow of hydraulic fluid to the main and tail-rotor servos will cease. The decreasing pressure will cause the pressure switch to activate the HYD light and the horn, which you can deactivate to make things quiet again. l 76 Move the cyclic fore and aft two to three for about four inches, to check the pitch servo. Then move it left and right the same way for the l Move the tail-rotor pedals left and right to check that the solenoid valve on the compensator body has dumped the pressure – the pedals should become stiff. Disengage the HYD TEST push button and re-engage the HORN button. Confirm that the HYD light has gone out. Hydraulic Isolation Check This check tests the proper operation of the isolation solenoid valves on the main rotor servos, plus the one on the yaw load compensator. l Check that the collective is securely locked down by the locking strip. l Place the switch on the collective in the cut-off position. This will open the isolation solenoid valves and connect the inlets and outlets of the servo control manifolds. Now, pressure cannot be built up. l The pressure switch on the distribution block senses this and illuminates the HYD light. As activating the isolation switch or push button disables the horn relay, the horn does not sound. l The cyclic will almost immediately get stiff. It should be slightly displaced fore and aft and left and right to ensure proper responses. l l l With the loss of pressure, the tail-rotor servo will no longer be receiving pressurized fluid. The pedals should then be displaced left and right to check that the yaw load compensator (if there is one) has held its charge by confirming that the pedals are partially boosted. Return the isolation switch to its normal position to close the solenoids. Pressure will build up again, especially in the accumulators. The horn will sound until the system is charged to above 38 ±2 bars over about two to three seconds. If it sounds for less than two seconds, the bladders in the accumulators may be overcharged, meaning that less hydraulic fluid can fit in. Since the accumulators will now fill to capacity faster, the system will achieve 38 ±2 bars faster. If the horn sounds for longer than 3 seconds, the bladders may be undercharged, so more hydraulic fluid can get in. As this takes more time, the system will be slower to achieve 38 ±2 bars. Problems and requisite action Loss of Pressure Loss of pressure can result from: n Hydraulic pump or belt failure Clogged filter Hydraulic line break Once pressure is lost, the pressure switch (12) on the distribution block will activate the HYD light and the horn. The accumulators should provide enough fluid under pressure to allow the controls to be normally boosted for 20-30 seconds, depending on how much and how harshly the controls are moved. Smooth and limited control inputs should allow you to land from an IGE hover or to otherwise bring the speed back to 40-60 kts. The yaw pedals on the B and BA models will become stiff, while those on the B1 and B2 models will feel partially boosted. The actions in flight are: n Calmly reduce collective and adjust airspeed to between 40-60 kts in level flight. The rotor blades have a positive pitch setting, so the collective will sit in more or less this position anyway. The cyclic, however, will want to move aft and to the right! n n Cut off hydraulic pressure with the collective switch, which will turn the horn off and dump the pressure in the accumulators at the same time, to prevent an asymmetric condition. Control loads will be felt when collective pitch is increased, and on forward and left-hand cyclic movement. You may increase speed at this point, but control feedback will also increase. n The flight manuals recommend that you land as soon as possible, so extended flight is not recommended, but you should still make a shallow approach over a clear landing area (runway? field?) and land with slight forward speed. Be ready for the cyclic wanting to travel aft and to the right, and the additional right pedal as collective pitch is increased, otherwise the machine will pitch up and rotate to the left. n After landing, lower the collective and lock it down while guarding the cyclic, which will have become stiff after you operate the CUT-OFF switch on the collective. Shut down the engine. If you are in ground effect, you should naturally control any tendency for the helicopter to spin – without a yaw load compensator, this might be quite hard! If out of ground effect, you will need to get to the 40-60 kt speed range, but otherwise the operations are the same. Slide Valve Seizure The servo input lever is moved in the relevant direction by the flying controls, which moves the servo control manifold slide-valve, routing the hydraulic fluid to the relevant side of the hydraulic piston and moving it in the desired direction. If the slide valve seizes in any position besides hydraulic zero, fluid will continue to flow and the cyclic (or pedals, if the tail-rotor servo is Train with the best: 300CBi ™ n Lowest cost of ownership. Preferred by instructors and pilots. Designed for the flight training mission. Simply stated, it’s the best training helicopter. w w w. s a c u s a . co m damiano gualdoni affected) will move without pilot input. If the fluid pressure is not shut off, the helicopter may get into an unrecoverable attitude. If the cyclic moves without your input, you should engage the isolation solenoid switch on the collective. The red HYD light will illuminate and the flight controls will immediately get stiff. If in the hover, you should land without delay. Adjust the speed as quickly as possible and as best you can to the proper range. The emergency procedure is: Actuate the (hydraulic) CUT-OFF switch on the collective. Load feedback will be felt immediately, which may be heavy at high speed: n Collective: 20 kg pitch increase load n Cyclic: 7-4 kg left-hand cyclic load n Cyclic: 2-4 kg forward cyclic load n Pedals: Hardly any Reduce speed to 60 kts and proceed as for illumination of the HYD light. n Note:There have been reports of un-commanded cyclic movement when the hydraulics are already off – one to this author’s knowledge during the preflight hydraulic check, after the accumulators were depleted. During this check and after the accumulators were depleted, the cyclic control moved un-commanded to an extreme left position. Considerable force was required to try to move it back. The un-commanded movement was repeatable, and is possible when one lateral accumulator is depleted and the other charged. However, un-commanded input is supposed to be prevented in flight when you slow down promptly to the specified speed and activate the hydraulic cutoff, where any unbalanced force from asymmetrical residual accumulator pressure is avoided. Without the 78 hydraulic cut-off activated, sustained asymmetrical pressure may occur if the accumulators deplete at a different rate, until the residual pressure is eventually depleted through normal movement of the flight controls. To check for this, (usually to the left), do a full hydraulics on check, then run the accumulators dry with the test switch, making sure that all is normal (for hydraulics off). Hit the switch again to recharge the accumulators, do a movement check, use the dump switch on the collective and recheck the movement. Do not dump the hydraulics with the collective switch after running the accumulators dry before recharging them – the collective switch may not be working and you won’t even know. Obviously, land as soon as possible if you get a problem, and do the above check before every flight. Servo Transparency (Jack-stall) This is a condition where the servos may stall under certain operating conditions and leave you with stiff or frozen cyclic and collective – essentially, the loads on the main rotor head become too much for the system to cope with - the smaller blades on the AS 350B are particularly prone to it. The conditions under which servo transparency occurs are supposed to be extreme, but have also been relatively benign, as when gently flying round a fire at 4,000 ft ASL on a warm day in a B model weighing 4,000 lb. In another example, the machine was descending from a mountain top at 110 kts with the collective fully down and well below gross weight. Windshear took the speed up to 155 kts and it snapped 90° to the right when the cyclic froze solid and both arms could not bring it back. The hydraulics operate at relatively low pressure, and when the forces down from the rotors equal the force the servos can send up, you will feel cyclic feedback, meaning that you have reached the G-limit, although the controls should still work with a little effort. This condition can be demonstrated by initiating a steep turn then slowly tightening up (at a prudent altitude, and not in turbulence). The worst case scenario would be heavy, with high power and a high turn rate, and is probably best avoided by never getting into a situation where a hard turn or climb is required for safety (i.e. avoiding a bird), as that’s when it might happen. The Twinstar has a LIMIT light on the caution panel to indicate this condition (the first ones didn’t have one, and the swash-plate used to get deformed). In other words, the jacks stall because the blades are stalling and add more and more force to the swashplate, due to the pitching moment of the aerofoil shifting with the stall. When the swash-plate gets heavily loaded, it pushes the servos backwards, despite the hydraulic pressure in them. If this were to do with hydraulic pressure, the light would come on first. Recover by reducing power and rolling level, recovering from any dive. Although it is a nimble machine, the AS 350 should be flown more as a medium, that is, gently. An AS350 pilot needs a thorough understanding of the aircraft’s hydraulic system, the nature and causes of the various failures, the consequences of each type of failure and complete familiarity with the correct emergency procedures. If all those criteria are fulfilled it is highly likely that he or she will avoid the unfortunate circumstance of a hydraulic failure related accident. n Real World Training For Real World Missions. ™ Special Operations Training Incident Management www.SRThelo.com · Bakersfield, California Office 661-393-4567 · Fax 661-393-4203 · [email protected] Law Enforcement Recurrent Operational &Pilot TrainingTraining Technical Rescue Because our training staff is comprised of working professionals who regularly respond to real-world missions, SRT’s training methods and curriculum are current, relevant, and designed to address real-life operational scenarios. 79 personal profile Franz Levitskiy Senior Instructor Pilot, Utair, Surgut , Russia 63 year-old Franz Ivanovich Levitskiy has enjoyed a 43year accident-free career as a helicopter pilot with Russia’s UTair, logging some 28,000 hours. His exceptionally rich flying experience, proven leadership and airmanship are among the number of personal qualities that earned him the profound respect and admiration of his crewmen, subordinates and the entire Russian industry. He could be regarded as one of the world’s most experienced active helicopter pilots flying heavy rotorcraft. Franz Levitskiy is a recipient of HAI’s 2008 Pilot of the Year Award. How did you get into flying? In 1962, I entered the Kremenchug Aviation Scholl in Ukraine, then a Soviet Union republic, to be trained as a helicopter pilot for civil aviation. My theoretical and flying training there took three years to complete and I graduated from the school in 1965 with around 70 flying hours on the Yakovlev Yak-18 fixed-wing trainer and 45 hours on the Mil Mi-4 piston-engined helicopter under my belt. I started my flying career as a Mi-4 co-pilot with the Tyumen Department of Civil Aviation. Now, some 43 years later, I am still working for the same organization, which is currently known as UTair, Russia’s largest helicopter operator and one of the biggest players in the world’s helicopter industry. Which types of helicopters have you flown since you began your career with UTair’s predecessor in 1965? In the beginning I flew the Mi-4, two years as a 80 co-pilot and four years as a captain. In 1971, I converted to the turbine-powered Mi-8 and eight years later to the Mi-6. In 1979 I became a qualified flying instructor as well. In 1986, I converted to the Mi-26T, the world’s biggest helicopter. The Tyumen-based Aeroflot division was the first in the former Soviet Union to receive the Mi-26’s civilian derivative which was mainly used for servicing the oil and gas exploration activities in Siberia. What kind of flying have you done since you began your career in helicopters? I have mastered all kinds of aerial works and activities that can be performed by medium and heavy helicopters. Since 1992, our company has been heavily involved in providing rotorcraft support to various UN-sponsored humanitarian and peacekeeping operations around the world, such as those held in the republics of former Yugoslavia, Somalia, Sierra Leone, Liberia, Congo, Easter Timor, etc. How many hours do you have now and on which types? I am getting on for 28,000 hours now. 5,000 of these have been logged on the Mi-4, while the Mi-6 has accounted for about 2,000. The balance of 21,000 hours has been accumulated on the Mi-8 (including the newest Mi-171) and Mi-26T. Are there any particularly remarkable moments that stand out in your flying career? It would have to be the flight endurance record-breaking mission I flew to the North Pole and back in 1999, with a load of scientists, geologists, crew and TV journalists onboard. The route stretched from Hatanga to a point nearby the North Pole and back, with refuelings at Komsomol Island and Sredni Island. Mission endurance was nearly 24 hours. Other particularly remarkable events were the Mi-26 ferry flights I have performed bringing helicopters back to Russia from Somalia and Sierra-Leone. These were typically flown in legs close to the maximal range of the helicopter (between 862 and 970 nm each), often in bad weather over difficult terrain. What was the most challenging thing you’ve ever had to do? In Sierra Leone I had an extremely challenging mission of transporting on external sling an Indian Army main battle tank to-and-from an area where it was used as an emergency tow vehicle in an effort to recover a number of damaged armored personnel carriers. The 18-tonne tank was successfully carried in and out despite the extreme flight conditions. The Mi-26 helicopter used for this delicate operation was flown near its maximum take-off weight, in high air temperature and high air humidity conditions which made the mission a very difficult one for the aircrew, with no margin for error. Among the other challenging operations I’ve flown in Russia, I can recall a particular flight to remove some equipment from the top of a 660 ft (200 m) tall chimney stack. Aerial cable-laying work is another very difficult and particularly demanding type of flying I have done, as the helicopter is required to move forward at a very slow speed, some 8 kts while precisely laying a 1.7nm long stretch of cable between poles. What is your view on the development of the helicopter industry in Russia today? There are plenty of positive developments happening. The Mi-26 for instance, is now in considerably higher demand than before, both in Russia and abroad. The Mi-8MTV and Mi-171 derivatives are also in high demand, for both aerial works and logistic support of UN-sponsored missions. Our company, in particular, has about 80 of these workhorses currently employed in support of UN operations worldwide. In order to support its growth, UTair has begun ordering new helicopters, mainly Mi-171s manufactured at the Ulan-Ude plant. The company has been also procuring in small numbers the Mi-26 built at Rostvertol. How does your company satisfy its need for new pilots in order to support the growth in operations worldwide? We are constantly hiring new pilots, mainly graduates of the Omsk-based Aviation School. Currently, the young pilot group represents a significant proportion of UTair’s flight personnel. In addition, we have been hiring relatively large numbers of ex-military pilots. Our own training center located in Tyumen is responsible for providing the initial and recurrent training of all our pilots for the three types of helicopters currently present in our fleet – Mi-8, Mi-171 and Mi-26. In addition, we are paying a lot of attention to the flight safety issues, and this is being reflected in the training and check programs. Every UTair helicopter pilot, for instance, is required to undergo four check landing approaches in OEI conditions on the real helicopter while simulator check rides are being performed once every three months. What are your plans for your career in the future? I have been around in Russia’s helicopter industry for 43 years and look to continue flying as long as medics consider me fit for flying. I do a lot of fitness in order to preserve my good physical condition. In the summer, for instance, I do jogging and gymnastics, while in the winter I use a step machine and stationary bike. n