# AD 71-09-03: Gasket and/or Fuel Leakage - Type: Airworthiness directive - Status: Current - Products: Continental Motors TSIO-360-A, TSIO-520-B, TSIO-520-D, TSIO-520-E and TSIO-520-J - Effective: April 29, 1971 - Superseded by: Nothing supersedes this AD - Product type: Engine - Amendment: 39-1198 - Registered aircraft: 6,043 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/64206BC2BE41C2688625682C006C5DA0.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/71-09-03 ## The airworthiness directive 71-09-03 CONTINENTAL: Amdt. 39-1198. In determining the applicable engine serial numbers hereinafter listed, the first block of letters in the serial number line located on the engine nameplate constitutes the basic serial number. The serial number will be followed by the year of manufacture and the model letter designation, for example "S/N 184491-70-A". Applies to the following Continental model engines: TSIO-360-A New - 184001 thru 184379; 184381 thru 184393; 184397 thru 184409; 184411, 184415, 184416, 184418 thru 184421; 184423 thru 184425; 184427, 184429 thru 184431; 184433 thru 184443; 184445, 184447 thru 184453; 184455 thru 184466; 184468, 184469, 184472, 184474, 184475, 184477 thru 184480; 184482, 184483, 184485, 184490, 184491. Remanufactured - 197001 thru 197010. TSIO-520-B New - 145001 thru 145779; 145781 thru 145785; 145787 thru 145790; 145793, 145796, 145798 thru 145800; 145802, 145806, 145808 thru 145810; 145812, 145815 thru 145820; 145823 thru 145825; 145827 thru 145829; 145831 thru 145837; 145840 thru 145846; 145848 thru 145875; 145880 and 145881. Remanufactured - 176001 thru 176105. TSIO-520-D New - 156001 thru 156146. Remanufactured - 180001 thru 180012. TSIO-520-E New - 165001 thru 166099, 206001 thru 206256; 206258 thru 206270; 206272, 206273, 206275, 206277 thru 206291; 206293 thru 206306; 206309, 206310, 206311, 206313 thru 206315; 206317 thru 206343; 206345 thru 206347; 206349 thru 206359; 206361, 206364 thru 206369; 206371, 206373 thru 206376; 206380, 206385, 206388 thru 206392; 206396 thru 206399; 206404 thru 206408; 206413, 206415, 206420, 206426, 206429. Remanufactured - 182001 thru 182148. TSIO-520-J New - 208001 thru 208114; 208116, 208118 thru 208124; 208126 thru 208140; 208142 thru 208157; 208159 thru 208163; 208165 thru 208197; 208199 thru 208203; 208205 thru 208207; 208209, 208214, 208217, 208230, 208234, 208235, 208238 thru 208240. NOTE: The manufacturer has installed the P/N 638223 gasket on some serial numbers of the remanufactured engines listed herein. These engines are identified by a white paint band around the aneroid housing. Notation of compliance with Paragraph B may be made in the maintenance records of these engines without further action. Compliance: Required as indicated, unless already accomplished. To prevent extrusion of P/N 632647 gasket and/or fuel leakage at the top edge of the variable orifice body, accomplish the following or any equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region, Kansas City, Missouri: A) Within 25 hours' time-in-service after the effective date of this AD, and thereafter at intervals of 100 hours' time-in-service, visually inspect the fuel injection pump in the area of the top edge of the variable orifice body for evidence of fuel leakage and/or extrusion of P/N 632647 gasket. In making this inspection, snip the cooling shroud inboard of the elbow fitting 3/8 inch vertically and bend up the bottom edge of the shroud to permit access to the area to be inspected. B) If the inspection required by Paragraph A discloses leakage and/or gasket extrusion, prior to further flight, replace P/N 632647 gasket with P/N 638223 gasket in accordance with Teledyne Continental Motors Service Bulletin M70-17 dated April 1, 1971 or later FAA approved revision. C) Upon accomplishment of the replacement provided in Paragraph B, compliance with the provisions of Paragraph A is no longer required. Teledyne Continental Motors Service Bulletin M70-17 dated April 1, 1971, or later FAA approved revision, refers to this subject. This amendment becomes effective April 29, 1971. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS E8CE](https://openairdocs.org/tcds/E8CE): Continental Aerospace Technologies, Inc.; names 4 of 31 models: TSIO-520-B, TSIO-520-J, TSIO-520-D, TSIO-520-E - [TCDS E9CE](https://openairdocs.org/tcds/E9CE): Continental Aerospace Technologies, Inc.; names 1 of 28 models: TSIO-360-A ## 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: 6,043 (0 by airframe model, 6,043 by engine model) - Makers: Cessna 3,279, Piper 1,330, Beech 675, Mooney 660, Raytheon 61, New Piper 7, Meyers Industries 2, Navion 2, Reims 2, Ryan 2 Models with the most aircraft: - [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series): 4,064 aircraft (engine model) - [Continental TSIO-360 series](https://openairdocs.org/engine/continental-tsio-360-series): 1,907 aircraft (engine model) - [TCM Cont TSIO-520 series](https://openairdocs.org/engine/tcm-cont-tsio-520-series): 49 aircraft (engine model) - [Continental TSIO-520-B](https://openairdocs.org/engine/continental-tsio-520-b): 9 aircraft (engine model) - [Continental TSIO-520-E](https://openairdocs.org/engine/continental-tsio-520-e): 6 aircraft (engine model) - [Continental TSIO-520-D](https://openairdocs.org/engine/continental-tsio-520-d): 4 aircraft (engine model) - [Continental TSIO-360-A](https://openairdocs.org/engine/continental-tsio-360-a): 3 aircraft (engine model) - [Continental TSIO-520-J](https://openairdocs.org/engine/continental-tsio-520-j): 1 aircraft (engine model) All 9 models: https://openairdocs.org/ad/71-09-03/models.md Every aircraft: https://openairdocs.org/ad/71-09-03/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.