TAT SI08-04

Service Instructions
TAT SI08-04
Issued:
Model SR22 w/ Turbonormalizer
COMPLIANCE
RECOMMENDED: Tornado Alley Turbo considers these Service Instructions to be RECOMMENDED. It is recommended that
these instructions are accomplished during the next scheduled Continued Airworthiness inspection. This is a reoccurring service that
should be accomplished at the predetermined time intervals recommended by Tornado Alley Turbo Inc.
EFFECTIVITY
All Cirrus Design SR22 equipped with a Tornado Alley Turbo Inc. Turbonormalizing System.
APPROVAL
Engine Technologies, Inc., the Turbonormalizing System STC holder, has approved all technical data in these Service Instructions that
affect the type design.
PURPOSE
The purpose of these Service Instructions is to inform SR22 owners and operators of the Tornado Alley Turbo inc. approved
procedure for inspecting and testing the Cirrus SR22 Cabin Heat Augmenter/Tailpipe assembly for signs of cracking. The objective of
this inspection and test is to ensure that there is no possibility of introducing exhaust into the cabin of the aircraft by way of the
heating system. This test is a part of the Continued Airworthiness inspection. This test is an approved alternative to the current
method of Tailpipe Borescope Inspection, and fulfills the FAR Part 23.1125 requirement for inspection of the Cabin Heat
Augmenter/Tailpipe assembly for induction leaks.
DESCRIPTION
These Service Instructions contain procedures to gain access, inspect, and test the Cabin Heat Augmenter/Tailpipe assembly for
induction leaks.
WARRANTY INFORMATION
Due to the fact that this test is required as part of the Continued Airworthiness inspection, the test and test kit are not covered under
warranty. If, however, a leak is detected, contact Tornado Alley Turbo Inc. for specific warranty considerations.
MANPOWER REQUIREMENTS
Gain access, Removal of scat tubing, Inspection, Pressure Test, and Replacement of scat tubing: 1 man hour.
WEIGHT AND BALANCE
Weight change: None.
MATERIAL INFORMATION
Left and Right Tailpipe with Cabin
Heat Augmenter
Tailpipe Test Kit
ALL
ETI-SR22-115-1
(NOT PROVIDED)
1
ea
1
ea
The Tailpipe Test Kit P/N ETI-SR22-115-1 can be ordered from Tornado Alley Turbo Inc., for $195.99
Tornado Alley Turbo, Inc.
300 Airport Road
Ada, Ok 74820
PH (580)332-3510
TAT SI08-04
Page 1 of 7
The test kit consists of a Regulator/Gauge assembly, 1 pair of 1” adapter couplings, and 1 pair of 1¼” adapter couplings. Use the
appropriate size adapter couplings for your tailpipe.
ACCOMPLISHMENT INSTRUCTIONS
1.
Gain access by removing both upper and lower cowls.
2.
Locate the tailpipes and identify the heat exchanger on each.
3.
Remove scat tubing from both inlet and outlet tube of the heat exchanger.
Tornado Alley Turbo, Inc.
300 Airport Road
Ada, Ok 74820
PH (580)332-3510
TAT SI08-04
Page 2 of 7
4.
5.
Install adapter couplings to the inlet and outlet tubes of the heat exchanger.
Attach the Regulator/Gauge assembly to the adapter coupling. Ensure that the valve is closed (handle perpendicular with
assembly), and the regulator is fully closed (knob turned completely to left).
Tornado Alley Turbo, Inc.
300 Airport Road
Ada, Ok 74820
PH (580)332-3510
TAT SI08-04
Page 3 of 7
6.
Attach assembly to air supply. Open valve (handle parallel with assembly) and open the regulator by slowly turning knob to
right.
7.
Adjust regulator to read 16PSI (±1 PSI)
Tornado Alley Turbo, Inc.
300 Airport Road
Ada, Ok 74820
PH (580)332-3510
TAT SI08-04
Page 4 of 7
8.
When the gauge reads 16 PSI (±1 PSI) fully close the valve (handle perpendicular with assembly) and detach air supply from
the Regulator/Gauge assembly.
9.
Watch the pressure gauge to see if there is any drop in pressure for a minimum of 3 minutes.
Tornado Alley Turbo, Inc.
300 Airport Road
Ada, Ok 74820
PH (580)332-3510
TAT SI08-04
Page 5 of 7
10. If after 3 minutes, the pressure gauge still reads 16 PSI (±1 PSI), then the heat exchanger has successfully passed the test and
the three testing components can be removed from the tailpipe and the scat tubing can be replaced.
11. If the pressure drops to less than 15 PSI over the 3 minute time frame, then it is critical to locate the source of the leak. To
determine the source, it is necessary to spray the entire system down with soapy water and look for bubbles indicating an air
leak. Pay particular attention to the adapter couplings as they may not have been tightened enough during initial assembly.
12. If any leak is detected on the portion of tailpipe behind the heat exchanger, it is possible for engine exhaust to enter the cabin
through the heating system. This is a potentially dangerous and unacceptable situation and the tailpipe will need to be
repaired or replaced. Note the location of the leak and call the Cirrus Service Center for warranty replacement.
SEE NEXT PAGE FOR TEST KIT PARTS
LIST
Tornado Alley Turbo, Inc.
300 Airport Road
Ada, Ok 74820
PH (580)332-3510
TAT SI08-04
Page 6 of 7
TEST KIT PARTS LIST
KEY QTY
1
1
1
2
1
3
3
4
4
5
2
6
2
7
4
8
1
9
1
10
1
11
1
12
1
13
1
Tornado Alley Turbo, Inc.
300 Airport Road
Ada, Ok 74820
PH (580)332-3510
PART NUMBER
ETI-SR22-115-1
ETI-SR22-115-2
ETI-SR22-115-3
6534K46
3716
5553K51
5553K59
10020H
ETI-SR22-115-4
ETI-SR22-115-5
3846K1
S1145
6536K18
33325K31
DESCRIPTION
COMPLETE TEST KIT
1” ALUMINUM PLUG
1” ALUMINUM PLUG WITH ¼” NPT HOLE
¼” I/M STYLE HOSE COUPLING (MALE)
SMALL HOSE CLAMP
1” I.D. x 3” CLEAR TYGON HOSE
1¼” I.D. x 3” CLEAR TYGON HOSE
LARGE HOSE CLAMP
1¼” ALUMINUM PLUG
1¼” ALUMINUM PLUG WITH ¼” NPT HOLE
0-30 PSI PRESSURE GAUGE
MINI HEAVY DUTY AIR REGULATOR
¼” I/M STYLE HOSE COUPLING (FEMALE)
¼” NPT MALE/FEMALE BALL VALVE
TAT SI08-04
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