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
71549-1	Washer, Rocker Thrust	—	—	85	Engine Accessories	OEM
71549-1	Washer, Rocker Thrust	—	—	85	Engine Accessories	OEM
71549-2	Washer, Rocker Thrust	—	—	85	Engine Accessories	OEM
71549-2	Washer, Rocker Thrust	—	—	85	Engine Accessories	OEM
71549-3	Washer, Rocker Thrust	—	—	85	Engine Accessories	OEM
71549-3	Washer, Rocker Thrust	—	—	85	Engine Accessories	OEM
71556	Ring, Compression	—	—	85	Engine Accessories	OEM
71556	Ring, Compression	—	—	85	Engine Accessories	OEM
71556 71939 74673 LW-12587	Ring, Compression	—	—	85	Engine Accessories	OEM
71556 71939 74673 LW-12587	Ring, Compression	—	—	85	Engine Accessories	OEM
71561	Fitting, Breather	—	—	85	Engine Accessories	OEM
71561	Fitting, Breather	—	—	85	Engine Accessories	OEM
71601	Shim, Master Rod	—	—	85	Engine Accessories	OEM
71601	Shim, Master Rod	—	—	85	Engine Accessories	OEM
71640	PLUG	LYC	PA-31 Navajo	85	Engine Accessories	unknown
71652	IDLER GEAR	—	—	85	Engine Accessories	PMA
71664	GEAR ASSY IDLER	LYC	PA-31 Navajo MD 500	85	Engine Accessories	OEM
71667	LOCK PLATE	—	PA-23 Apache	85	Structures
71688	Gear Assembly, Idler	—	—	85	Engine Accessories	OEM
71688	Gear Assembly, Idler	—	—	85	Engine Accessories	OEM
71699	INTAKE PIPE	LYC	C182 Skylane PA-32 Saratoga+1	85	Engine Accessories
71712	RISER	—	PA-44 Seminole	85	unknown	OEM
71737	DRAIN TUBE	—	PA-32 Saratoga PA-23 Apache+1	85	Consumables / Hardware	PMA
71828	CYLINDER	—	—	85	Engine Accessories
71841	Cylinder Assembly	—	—	85	Engine Accessories	OEM
71841	Cylinder Assembly	—	—	85	Engine Accessories	OEM
71848	Cylinder Assembly	—	—	85	Engine Accessories	OEM
71848	Cylinder Assembly	—	—	85	Engine Accessories	OEM
71894	VALVE SEAT	—	PA-31 Navajo	85	Interior / Furnishings	PMA
71894 P05	Seat, Exhaust Valve	—	—	85	Engine Accessories	OEM
71894 P10	Seat, Exhaust Valve	—	—	85	Engine Accessories	OEM
71894 P20	Seat, Exhaust Valve	—	—	85	Engine Accessories	OEM
71894 P30	Seat, Exhaust Valve	—	—	85	Engine Accessories	OEM
71895	Insert, Valve Seat, Intake	—	—	85	Engine Accessories	OEM
71895	Insert, Valve Seat, Intake	—	—	85	Engine Accessories	OEM
71895 P05	Seat, Intake Valve	—	—	85	Engine Accessories	OEM
71895 P20	Seat, Intake Valve	—	—	85	Engine Accessories	OEM
71895 P30	Seat, Intake Valve	—	—	85	Engine Accessories	OEM
71895P10	VALVE SEAT	—	—	85	Interior / Furnishings	PMA
71903	Bushing, Counterweight	—	—	85	Engine Accessories	OEM
71903	Bushing, Counterweight	—	—	85	Engine Accessories	OEM
71907	RETAINER	LYC	PA-44 Seminole MD 500	85	Engine Accessories	OEM
71939	Ring, Compression	—	—	85	Engine Accessories	OEM
71939	Ring, Compression	—	—	85	Engine Accessories	OEM
71973	GASKET	—	C172 Skyhawk C206 Stationair	85	Consumables / Hardware
71CATIST714CA	CYLINDER	ECI	C206 Stationair	85	Engine Accessories	PMA
72002	Pin Counterweight	—	—	85	Engine Accessories	OEM
72002	Pin Counterweight	—	—	85	Engine Accessories	OEM
72050	KEEPER	—	C172 Skyhawk PA-31 Navajo	85	Consumables / Hardware
72057	VALVE SEAT	LYC	PA-18 Super Cub PA-44 Seminole	85	Engine Accessories	OEM