2008-11-18: Heat exchanger

2008-11-18 Cirrus Design Corporation: Amendment 39-15541; Docket No. FAA-2008-0284; Directorate Identifier 2008-CE-006-AD. Effective Date (a) This AD becomes effective on July 7, 2008. Affected ADs (b) None. Applicability (c) This AD applies to Model SR20 airplanes, serial numbers 1005 through 1815, that are certificated in any category. Unsafe Condition (d) This AD results from the discovery of engine exhaust fumes in the cabin of Cirrus Design Corporation 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. Compliance (e) 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. Alternative Methods of Compliance (AMOCs) (f) The Manager, Chicago Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Michael Downs, Aerospace Engineer, Chicago ACO, 2300 East Devon Avenue, Room 107, Des Plaines, Illinois 60018; telephone: (847) 294-7870; fax: (847) 294-7834. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. Material Incorporated by Reference (g) You must use Cirrus Service Bulletin SB 2X-78-07 R1, Revision 1, dated December 18, 2007, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 55811, telephone: (218) 788-3000. (3) You may review copies at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Kansas City, Missouri 64106; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202- 741-6030, or go to: http://www.archives.gov/federal_register/code_ of_federal_regulations/ibr_locations.html.