Airworthiness Directive · Amendment 39-15541 · Cirrus Design Corporation Model SR20 Airplanes
Cirrus Design Corporation Model SR20 Airplanes
This AD applies to Model SR20 airplanes, serial numbers 1005 through 1815, that are certificated in any category.
We are adopting a new airworthiness directive (AD) for certain Cirrus Design Corporation (CDC) Model SR20 airplanes. This AD requires you to perform an inspection and replacement as necessary of the heat exchanger. This AD results from the discovery of engine exhaust fumes in the cabin of CDC Model SR20 airplanes. We are issuing this AD to detect and correct leaks in the exhaust system, which could result in exhaust gases leaking into the cabin heating system. This condition could lead to carbon monoxide in the cabin and incapacitation of the pilot.
To address this problem, you must do the following, unless already done:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Perform a pressurization inspection/check on the exhaust system | Initially within the next 25 hours time-in-service (TIS) after July 7, 2008 (the effective date of this AD) or within the next 3 months after July 7, 2008 (the effective date of this AD), whichever occurs first. Repetitively thereafter at intervals not to exceed every 100 hours TIS | Follow Cirrus Service Bulletin SB 2X-78-07 R1, Revision 1, dated December 18, 2007. |
| (2) If the exhaust system is found defective during any inspection/check required in paragraph (e)(1) of this AD or an exhaust odor is detected inside the airplane cabin, replace the heat exchanger weldment and shroud with new improved heat exchanger weldment and new shroud | Before further flight after the inspection/check in which the exhaust system is found defective or an exhaust odor is detected | Follow Cirrus Service Bulletin SB 2X-78-07 R1, Revision 1, dated December 18, 2007. |
Note: The replacement of the heat exchanger weldment and shroud may be done instead of the initial inspection but does not eliminate the 100-hour repetitive inspection.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
