# AD 71-09-07 R1: Exhaust Gases Entering Cabin - Type: Airworthiness directive - Status: Current - Products: Cessna T207, T207A, T210F, T210G, T210H, T210J, T210K, T210L, T210M, T210N, TP206A, TP206B and 10 more - Effective: November 26, 1986 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-5445 - Registered aircraft: 1,687 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/592E0C9F8A6DD2DD86256A340062E13C.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/71-09-07-R1 ## The airworthiness directive 71-09-07 R1 CESSNA: Amendment 39-1202 as amended by Amendment 39-5445. Applies to turbocharged Models TU206 Series, TP206 Series, T207 Series (all serial numbers), and Models T210 thru T210N (Serial Numbers T210-0001 through T210-0454 and 21059200 through 21064897) airplanes certificated in any category. Compliance: Required as indicated in the body of the AD. To prevent exhaust gases from entering the cabin, accomplish the following: (a) Within the next 25 hours time-in-service (TIS) after the effective date of this AD, unless already accomplished within the last 25 hours TIS, and thereafter at intervals not to exceed 50 hours TIS since the last inspection per this AD prior to its revision, inspect the exhaust manifold heat exchanger in accordance with the following: (1) Test the complete exhaust manifold in the cabin heat exchanger area for cracks in accordance with the following procedures, or the more detailed procedures, outlined in the Cessna Service Manuals for the specified airplanes. (i) Remove the heater shroud so that all surfaces of the exhaust manifold heat exchanger are exposed. (ii) Attach the pressure side of an industrial vacuum cleaner to the tailpipe opening, using a rubber plug to effect a seal as required. (iii) With vacuum cleaner operating, check the complete exhaust manifold in the heat exchanger area manually by feel or by using a soap solution and watching for bubbles. The exhaust manifold in the heat exchanger area must be free of air leaks. (2) If cracks, breaks, or any leakage along the exhaust manifold cabin heat exchanger are found during the pressure test required by paragraph (a)(1) of this AD, prior to further flight replace the defective part with an airworthy part. NOTE: Cessna Service Letter SE71-11, dated April 16, 1971, covers this same subject. (b) An equivalent means of compliance with this AD may be used if approved by the Manager, Wichita Aircraft Certification Office, FAA, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209. All persons affected by this directive may obtain copies of the documents referred to herein upon request to the Cessna Aircraft Company, Piston Aircraft Marketing Division, Post Office Box 1521, Wichita, Kansas 67201; or the FAA, Office of the Regional Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106. Amendment 39-1202 became effective May 4, 1971. This amendment, 39-5445, becomes effective on November 26, 1986. ## Affected data sheets (3) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A4CE](https://openairdocs.org/tcds/A4CE): Textron Aviation Inc.; names 12 of 29 models: TP206B, TP206C, TU206A, TP206A, TU206D, TU206C, TU206F, TU206E… - [TCDS 3A21](https://openairdocs.org/tcds/3A21): Textron Aviation Inc.; names 8 of 28 models: T210M, T210F, T210G, T210N, T210L, T210H, T210J, T210K - [TCDS A16CE](https://openairdocs.org/tcds/A16CE): Textron Aviation Inc.; names 2 of 4 models: T207, T207A ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 1,687 (1,687 by airframe model, 0 by engine model) - Makers: Cessna 1,687 Models with the most aircraft: - [Cessna T210N](https://openairdocs.org/model/cessna-t210n): 467 aircraft (airframe model) - [Cessna T210M](https://openairdocs.org/model/cessna-t210m): 321 aircraft (airframe model) - [Cessna T210L](https://openairdocs.org/model/cessna-t210l): 305 aircraft (airframe model) - [Cessna TU206G](https://openairdocs.org/model/cessna-tu206g): 207 aircraft (airframe model) - [Cessna TU206F](https://openairdocs.org/model/cessna-tu206f): 87 aircraft (airframe model) - [Cessna T210F](https://openairdocs.org/model/cessna-t210f): 65 aircraft (airframe model) - [Cessna T207A](https://openairdocs.org/model/cessna-t207a): 44 aircraft (airframe model) - [Cessna T210H](https://openairdocs.org/model/cessna-t210h): 26 aircraft (airframe model) - [Cessna T210K](https://openairdocs.org/model/cessna-t210k): 26 aircraft (airframe model) - [Cessna T210G](https://openairdocs.org/model/cessna-t210g): 25 aircraft (airframe model) - [Cessna T207](https://openairdocs.org/model/cessna-t207): 21 aircraft (airframe model) - [Cessna T210J](https://openairdocs.org/model/cessna-t210j): 19 aircraft (airframe model) - [Cessna TU206B](https://openairdocs.org/model/cessna-tu206b): 18 aircraft (airframe model) - [Cessna TU206C](https://openairdocs.org/model/cessna-tu206c): 13 aircraft (airframe model) - [Cessna TU206A](https://openairdocs.org/model/cessna-tu206a): 12 aircraft (airframe model) - [Cessna TP206C](https://openairdocs.org/model/cessna-tp206c): 7 aircraft (airframe model) - [Cessna TP206A](https://openairdocs.org/model/cessna-tp206a): 6 aircraft (airframe model) - [Cessna TP206B](https://openairdocs.org/model/cessna-tp206b): 6 aircraft (airframe model) - [Cessna TU206D](https://openairdocs.org/model/cessna-tu206d): 5 aircraft (airframe model) - [Cessna TP206D](https://openairdocs.org/model/cessna-tp206d): 4 aircraft (airframe model) All 24 models: https://openairdocs.org/ad/71-09-07-R1/models.md Every aircraft: https://openairdocs.org/ad/71-09-07-R1/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.