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
77603	Cylinder Assembly	—	—	85	Engine Accessories	OEM
77672	LIFTER	LYC	—	85	Engine Accessories
77692	Turbocharger	—	—	85	Engine Accessories	OEM
77808	RELIEF VALVE	—	PA-31 Navajo PA-46 Malibu	85	Hydraulics	PMA
77852	OIL FILTER	—	PA-28 Cherokee PA-32 Saratoga+4	85	Consumables / Hardware	PMA
77907	Spacer	—	—	85	Consumables / Hardware	OEM
77998	HOUSING	—	PA-31 Navajo	85	unknown	OEM
78027	CONNECTIING ROD	LYC	C172 Skyhawk C152	85	Engine Accessories	OEM
78030	CONNECTING ROD	LYC	C172 Skyhawk	85	Engine Accessories
78037	Spring	VSE Aviation Services LLC	—	85	Engine Accessories	PMA
78072	BOLT	—	PA-38 Tomahawk	85	Electromechanical	PMA
78206	CASE HALF	—	C172 Skyhawk	85	unknown	OEM
78219	Crankcase Assembly (Dynafocal Type 1 Mount, Narrow Deck)	—	—	85	Engine Accessories	OEM
78220	Crankcase Assembly (Dynafocal Type 1 Mount, Narrow Deck)	—	—	85	Engine Accessories	OEM
78222	Crankcase Assembly (Conical Mount, Wide Deck)	—	—	85	Engine Accessories	OEM
78224	Crankcase Assembly (Dynafocal Type 2 Mount, Wide Deck)	—	—	85	Engine Accessories	OEM
78225	Crankcase Assembly	—	—	85	Engine Accessories	OEM
7826	CRANKCASE	—	C172 Skyhawk	85	Engine Accessories	PMA
78290	PLUNGER ASSY	—	PA-28 Cherokee PA-31 Navajo	85	Engine Accessories	OEM
784819	CYLINDER	—	C402	85	unknown	OEM
78524	Socket, Pushrod	—	—	85	Engine Accessories	OEM
78524	Socket, Pushrod	—	—	85	Engine Accessories	OEM
78528	HOUSING	—	PA-28 Cherokee	85	unknown
78531	HOUSING	LYC	M20E	85	Engine Accessories	OEM
78597	Cylinder Assembly	—	—	85	Engine Accessories	OEM
78619	PUMP	—	PA-28 Cherokee	85	Hydraulics	OEM
78717	Camshaft Assembly	—	—	85	Engine Accessories	OEM
78717	Camshaft Assembly	—	—	85	Engine Accessories	OEM
78743	INTAKE PIPE	—	M20F	85	Engine Accessories	OEM
78758	Piston, 7.30 1 Comp. Ratio	—	—	85	Engine Accessories	OEM
78758	Piston, 7.30 1 Comp. Ratio	—	—	85	Engine Accessories	OEM
78825	Cylinder Assembly	—	—	85	Engine Accessories	OEM
78862 P10	Piston Ring	—	—	85	Engine Accessories	OEM
78864	Ring - Piston	—	—	85	Engine Accessories	OEM
78864	Ring - Piston	—	—	85	Engine Accessories	OEM
78864 P10	Piston Ring	—	—	85	Engine Accessories	OEM
79027	CRANKSHAFT	—	PA-31 Navajo	85	unknown	OEM
79475-57 (tinted)	Cabin door window - right front	—	PA-34 Seneca PA-32 Cherokee Six	85	Engine Accessories	OEM
79475-57 (tinted)	Cabin door window - right front	—	PA-34 Seneca PA-32 Cherokee Six	85	Engine Accessories	OEM
799803-1	Piston Ring	—	747-400 767-200+6	85	Engine Accessories	OEM
802	EXHAUST VALVE	—	MD 500	85	Engine Accessories	OEM
802316-1	Seal, Double Lip-Rear	—	—	85	Engine Accessories	OEM
802316-1	Seal, Double Lip-Rear	—	—	85	Engine Accessories	OEM
802316P-1	Seal, Double Lip-Rear	Pacific Sky Supply Inc	—	85	Engine Accessories	PMA
802347-1	Seal, Double Lip-Front	—	—	85	Engine Accessories	OEM
802347-1	Seal, Double Lip-Front	—	—	85	Engine Accessories	OEM
802347P-1	Seal, Double Lip-Front	Pacific Sky Supply Inc	—	85	Engine Accessories	PMA
80285	BOLT	—	—	85	unknown	OEM
808612-3AES	Ring, Piston Set, Contracting	Aviation Engineered Services	—	85	Engine Accessories	PMA
81-10005-( )	Induction Tube Assemblies	Machen, Inc.	C337 Skymaster	85	Engine Accessories	PMA