ATA 85 — Reciprocating Engine

20,859 parts classified under this chapter

Reliability rollup

91%Median scrap propensity

2,637 parts · 5,796 SDR reports

From FAA Service Difficulty Reports

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
76270	CAM	PWA	Douglas DC-6	85	Engine Accessories
76270F	FRONT CAM	—	—	85	unknown
76271	CAM	PWA	Douglas DC-6	85	Engine Accessories
7627DG	CAM	—	—	85	unknown
76327	DRIVE GEAR	—	—	85	Engine Accessories	OEM
76333	BUSHING	LYC	—	85	Engine Accessories	OEM
76354	OIL PUMP	—	C172 Skyhawk	85	Engine Accessories	unknown
76428	CRANKSHAFT	—	—	85	unknown
76436	Support Assembly	—	—	85	Engine Accessories	OEM
76436	Support Assembly	—	—	85	Engine Accessories	OEM
76533	Bracket	—	—	85	Engine Accessories	OEM
76533	Bracket	—	—	85	Engine Accessories	OEM
76539	VALVE	—	PA-28 Cherokee	85	unknown
76570F	CAM	PWA	Douglas DC-6	85	Engine Accessories
76590	Crankcase Assembly (Dynafocal Type 1 Mount, Narrow Deck)	—	—	85	Engine Accessories	OEM
76592	Crankcase Assembly (Dynafocal Type 1 Mount, Narrow Deck)	—	—	85	Engine Accessories	OEM
76601	Crankcase Assembly (Dynafocal Type 1 Mount, Narrow Deck)	—	—	85	Engine Accessories	OEM
76617	LINE	LYC	M20C	85	unknown	OEM
76620	STUD	LYC	PA-31 Navajo	85	Consumables / Hardware	OEM
767154	Shaft, Tachometer Assembly	—	—	85	Engine Accessories	OEM
767154	Shaft, Tachometer Assembly	—	—	85	Engine Accessories	OEM
76763	CRANK ASSY	LYC	PA-32 Saratoga PA-32 Cherokee Six	85	Engine Accessories	OEM
76770	BRACKET	—	PA-31 Navajo	85	unknown
76786	DRIVE GEAR	—	PA-31 Navajo	85	Engine Accessories	PMA
76948	CRANKSHAFT	—	—	85	Engine Accessories	PMA
76951	CRANKSHAFT	LYC	C172 Skyhawk	85	Engine Accessories	OEM
76966	Piston, 7.30 1 Comp. Ratio	—	—	85	Engine Accessories	OEM
76966	Piston, 7.30 1 Comp. Ratio	—	—	85	Engine Accessories	OEM
77	TAPPET	—	—	85	Engine Accessories	PMA
77037	CRANKSHAFT	—	PA-28 Cherokee	85	Engine Accessories	PMA
77059	Camshaft Assembly	—	—	85	Engine Accessories	OEM
77059	Camshaft Assembly	—	—	85	Engine Accessories	OEM
7708	REGULATOR	—	PA-31 Navajo	85	unknown
77110	Cylinder Assembly	—	—	85	Engine Accessories	OEM
77134	CAMSHAFT	LYC	757-200	85	Engine Accessories
77140	CAMSHAFT	—	—	85	Engine Accessories	OEM
77160	VALVE GUIDE	—	C172 Skyhawk	85	Engine Accessories
77160S	GUIDE	—	—	85	unknown	OEM
77168	CYLINDER	—	—	85	Hydraulics	OEM
77366	CRANKCASE	LYC	—	85	Engine Accessories	OEM
77416	BUMPER BLOCK	LYC	—	85	Engine Accessories	OEM
77450	CONNECTING ROD	—	M20J	85	unknown	OEM
77476	Barrel, Narrow-Deck	—	—	85	Engine Accessories	OEM
77517	SUMP	—	—	85	unknown	OEM
77527	FILLER TUBE	—	PA-31 Navajo PA-23 Apache	85	Consumables / Hardware	PMA
77544	Cylinder Assembly	—	—	85	Engine Accessories	OEM
77544	Cylinder Assembly	—	—	85	Engine Accessories	OEM
77569	SEAL	—	PA-28 Cherokee	85	Consumables / Hardware	OEM
77579	SLIP RING	—	PA-28 Cherokee PA-31 Navajo	85	Electromechanical
77603	Cylinder Assembly	—	—	85	Engine Accessories	OEM