# AD 81-07-06: AC Fuel Pumps - Type: Airworthiness directive - Status: Current - Products: Continental Motors A-65-1, A-65-12, A-65-12F, A-65-12FJ, A-65-12J, A-65-14, A-65-14F, A-65-14FJ, A-65-14J, A-65-3, A-65-6, A-65-6J and 51 more - Effective: April 1, 1981 - Superseded by: Nothing supersedes this AD - Product type: Engine - Amendment: 39-4071 - Registered aircraft: 26,599 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C568B702F3A8662E8625684000626FB9.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/81-07-06 ## The airworthiness directive 81-07-06 TELEDYNE CONTINENTAL MOTORS: Amendment 39-4071. Applies to Continental A-65, A75, C75, C85, C90, A-100, C125, and O-200 series engines with AC fuel pumps, TCM part number 40585, 40695 or 631391 installed. Compliance required within 30 days after the effective date of this AD, or within the next 25 hours time in service after the effective date of this AD, whichever occurs first, unless already accomplished within the last 12 months and at intervals not to exceed 12 months after the last inspection. To prevent fuel starvation due to fuel flow restriction through the pump screen accomplish the following: a. Remove safety wire and bolt from fuel pump top cover. Discard fiber washer under bolt. b. Remove the fuel pump top cover. Discard cork cover gasket. c. Remove fuel pump screen. d. Inspect the fuel pump and fuel pump screen for contamination. (1) If contaminated, clean fuel pump and fuel pump screen. (2) If fuel pump is damaged by corrosion, replace with an applicable serviceable fuel pump. (3) If fuel pump screen is damaged by corrosion or handling, replace with a serviceable fuel pump screen, TCM P/N 643913. e. Reinstall fuel pump screen, fuel pump cover with new cork cover gasket, TCM P/N 643915 and new bolt gasket P/N 643914. Torque bolt to 30 5 inch-pounds. f. Resafety wire fuel pump top cover bolt and check for leaks. g. Make the appropriate maintenance record entry. An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. Teledyne Continental Motors Service Bulletin M81-8, dated March 9, 1981, pertains to this subject. This amendment becomes effective April 1, 1981. ## Affected data sheets (6) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS E-205](https://openairdocs.org/tcds/E-205): Continental Aerospace Technologies, Inc.; names 21 of 21 models: A-65-14F, A-65-8FJ, A-65-9F, A-65-14FJ, A-65-9J, A-65-12F, A-65-3, A-65-9… - [TCDS E-233](https://openairdocs.org/tcds/E-233): Continental Aerospace Technologies, Inc.; names 16 of 31 models: C85-14F, C85-12F, C75-8F, C75-15, C75-8FHJ, C75-8FJ, C85-8FHJ, C85-12J… - [TCDS E-252](https://openairdocs.org/tcds/E-252): Continental Aerospace Technologies, Inc.; names 13 of 15 models: C90-8F, O-200-A, C90-12F, C90-12FP, O-200-C, C90-8FJ, C90-14FJ, C90-12FH… - [TCDS E-213](https://openairdocs.org/tcds/E-213): Continental Aerospace Technologies, Inc.; names 9 of 9 models: A75-3, A75-9, A75-6J, A75-8, A75-9J, A75-6, A75-8J, A75-8FJ… - [TCDS E-236](https://openairdocs.org/tcds/E-236): Continental Aerospace Technologies, Inc.; names 2 of 4 models: C-125-1, C-125-2 - [TCDS E-241](https://openairdocs.org/tcds/E-241): Continental Aerospace Technologies, Inc.; names 2 of 2 models: A100-2, A100-1 ## 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: 26,599 (0 by airframe model, 26,599 by engine model) - Makers: Cessna 10,464, Piper 4,291, Aeronca 3,362, Taylorcraft 1,652, Luscombe 1,333, Ercoupe 792, Champion 706, Engineering & Research 528, Globe 236, Silvaire 185 Models with the most aircraft: - [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series): 8,790 aircraft (engine model) - [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series): 7,967 aircraft (engine model) - [Continental C85 series](https://openairdocs.org/engine/continental-c85-series): 4,671 aircraft (engine model) - [Continental C90 series](https://openairdocs.org/engine/continental-c90-series): 2,149 aircraft (engine model) - [Continental A&C75 series](https://openairdocs.org/engine/continental-a-c75-series): 1,504 aircraft (engine model) - [Continental O-200 series](https://openairdocs.org/engine/continental-o-200-series): 329 aircraft (engine model) - [Continental C125 series](https://openairdocs.org/engine/continental-c125-series): 322 aircraft (engine model) - [Continental O-200A](https://openairdocs.org/engine/continental-o-200a): 295 aircraft (engine model) - [Continental A-65-8](https://openairdocs.org/engine/continental-a-65-8): 137 aircraft (engine model) - [Continental 0-200-A](https://openairdocs.org/engine/continental-0-200-a): 96 aircraft (engine model) - [Continental C85-12F](https://openairdocs.org/engine/continental-c85-12f): 90 aircraft (engine model) - [Continental C90-12F](https://openairdocs.org/engine/continental-c90-12f): 54 aircraft (engine model) - [Continental A-65 series](https://openairdocs.org/engine/continental-a-65-series): 32 aircraft (engine model) - [Continental C90-8F](https://openairdocs.org/engine/continental-c90-8f): 30 aircraft (engine model) - [Continental A-65-8F](https://openairdocs.org/engine/continental-a-65-8f): 24 aircraft (engine model) - [Continental A75-8](https://openairdocs.org/engine/continental-a75-8): 18 aircraft (engine model) - [Rolls-Royce O-200-A](https://openairdocs.org/engine/rolls-royce-o-200-a): 15 aircraft (engine model) - [Continental C85-8FJ](https://openairdocs.org/engine/continental-c85-8fj): 11 aircraft (engine model) - [Continental C90-14F](https://openairdocs.org/engine/continental-c90-14f): 11 aircraft (engine model) - [Rolls-Royce 0-200-A](https://openairdocs.org/engine/rolls-royce-0-200-a): 11 aircraft (engine model) All 36 models: https://openairdocs.org/ad/81-07-06/models.md Every aircraft: https://openairdocs.org/ad/81-07-06/aircraft.md Its text cites no advisory circulars or STCs. ## NTSB investigations that cite this AD (2) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB CEN09LA291](https://openairdocs.org/ntsb/CEN09LA291), May 12, 2009: Univair Ercoupe (N99811), Brighton, MI, substantial damage. Probable cause: The pilot's failure to attain the proper touchdown point, and his failure to initiate a go-around. - [NTSB ATL03FA128](https://openairdocs.org/ntsb/ATL03FA128), Aug 17, 2003: Ercoupe 415-C (N99748), Rome, GA, destroyed, 2 fatal. Probable cause: A loss of engine power due to fuel system contamination (water). Also causal was the pilot's loss of control for undetermined reasons. --- 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.