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
75657-S P15	Bushing, Prop Flange, Indexing	—	—	85	Engine Accessories	OEM
75657-S P20	Bushing, Prop Flange, Indexing	—	—	85	Engine Accessories	OEM
75670	CRANKSHAFT	—	—	85	unknown
75706	CAMSHAFT	LYC	C152	85	Engine Accessories	OEM
75717	Cylinder Assembly	—	—	85	Engine Accessories	OEM
75717	Cylinder Assembly	—	—	85	Engine Accessories	OEM
75767 72373	Tube, Oil Level Gage	—	—	85	Engine Accessories	OEM
75772	PUSHROD TUBE	—	C172 Skyhawk	85	Engine Accessories	PMA
75776	Shroud Tube	—	—	85	Engine Accessories	OEM
75776	Shroud Tube	—	—	85	Engine Accessories	OEM
7580213	CYLINDER HEAD	—	C172 Skyhawk	85	unknown	OEM
75805	Cylinder Assy. With Valves and Piston	—	—	85	Engine Accessories	OEM
75805	Cylinder Assy. With Valves and Piston	—	—	85	Engine Accessories	OEM
75809	Cylinder Assembly	—	—	85	Engine Accessories	OEM
75809	Cylinder Assembly	—	—	85	Engine Accessories	OEM
7581378	SEAL	—	PA-31 Navajo	85	Consumables / Hardware	OEM
75838	VALVE GUIDE	—	PA-32 Saratoga PA-31 Navajo	85	Engine Accessories	PMA
75838 P10	Guide, Exhaust Valve, High Chrome	—	—	85	Engine Accessories	OEM
75868	Cylinder Assembly	—	—	85	Engine Accessories	OEM
75868	Cylinder Assembly	—	—	85	Engine Accessories	OEM
75872	Cylinder Assembly	—	—	85	Engine Accessories	OEM
75872	Cylinder Assembly	—	—	85	Engine Accessories	OEM
75874	CYLINDER	—	PA-28 Cherokee	85	Hydraulics	PMA
75906	Valve Cover Gasket	Real Gasket TN	—	85	Powerplant / Nacelle	PMA
75907	Barrel	—	—	85	Engine Accessories	OEM
75910	Barrel	—	—	85	Engine Accessories	OEM
759526	CYLINDER	—	—	85	unknown	OEM
75961	Piston, 7.30 1 Comp. Ratio	—	—	85	Engine Accessories	OEM
75961	Piston, 7.30 1 Comp. Ratio	—	—	85	Engine Accessories	OEM
75964	Plug	—	—	85	Consumables / Hardware	OEM
75971	Barrel	—	—	85	Engine Accessories	OEM
76038	VALVE COVER	—	PA-31 Navajo	85	Engine Accessories	OEM
76086	Cylinder Assembly	—	—	85	Engine Accessories	OEM
76086	Cylinder Assembly	—	—	85	Engine Accessories	OEM
76087	Cylinder Assembly	—	—	85	Engine Accessories	OEM
76094	CAMSHAFT	—	—	85	unknown
76097	CAMSHAFT	—	C172 Skyhawk PA-28 Cherokee+1	85	Engine Accessories	PMA
76118	SPACER	—	—	85	Consumables / Hardware	OEM
76148	CAMSHAFT	—	PA-31 Navajo	85	Engine Accessories	OEM
76152	HOUSING	—	PA-23 Apache	85	unknown
76172	Piston, VO- 435 8. 7:1 CR	—	—	85	Engine Accessories	OEM
76189	CYLINDER	—	MD 500	85	unknown
76190	CYLINDER	—	MD 500	85	Hydraulics	PMA
76220	THROUGH-BOLT	LYC	PA-28 Cherokee PA-31 Navajo+2	85	Consumables / Hardware	OEM
76220 P10	Bolt, Thru, Crankcase	—	—	85	Engine Accessories	OEM
76220P001	BOLT	—	PA-32 Saratoga PA-32 Cherokee Six	85	Consumables / Hardware	OEM
76220P01	STUD	LYC	PA-28 Cherokee C172S	85	Consumables / Hardware	OEM
76220P02	BOLT	—	PA-31 Navajo	85	unknown	OEM
76261	Cylinder Assembly	—	—	85	Engine Accessories	OEM
76261	Cylinder Assembly	—	—	85	Engine Accessories	OEM