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
633976	COUNTERWEIGHT PL	—	M20K	85	unknown
634080	BOLT	—	C402	85	Consumables / Hardware	OEM
634503	MAIN BEARING	—	C404 Titan C421 Golden Eagle	85	Engine Accessories	PMA
634503 M05	Bearing, Main	—	—	85	Engine Accessories	OEM
634503 M05	Bearing, Main	—	—	85	Engine Accessories	OEM
634503 M10	Bearing, Main	—	—	85	Engine Accessories	OEM
634503 M10	Bearing, Main	—	—	85	Engine Accessories	OEM
634503 M20	Bearing, Main	—	—	85	Engine Accessories	OEM
634503 M20	Bearing, Main	—	—	85	Engine Accessories	OEM
634503M010	BEARING	—	C404 Titan	85	unknown
634504-10.75	Bolt, Thru, 1/2 x 10-3/4	—	—	85	Consumables / Hardware	OEM
634504-10.75	Bolt, Thru, 1/2 x 10-3/4	—	—	85	Consumables / Hardware	OEM
634505	CRANKCASE NUT	—	C182 Skylane C421 Golden Eagle	85	Consumables / Hardware	OEM
634570	Breather Assy	—	—	85	Engine Accessories	OEM
634570	Breather Assy	—	—	85	Engine Accessories	OEM
635024	bracket	teledyne continental	—	85	Consumables / Hardware	OEM
635034-2	Turbocharger	—	—	85	Engine Accessories	OEM
635048A1	ADAPTER	—	PA-28 Cherokee	85	unknown	OEM
635050	STARTER DRIVE	—	—	85	Engine Accessories
635050A1	ADAPTER GEAR	—	C421 Golden Eagle	85	unknown
635050A4	ADAPTER	—	C182 Skylane C185 Skywagon	85	unknown
635093	bolt	teledyne continental	—	85	Consumables / Hardware	OEM
635104	CRANKSHAFT	—	C404 Titan	85	unknown
635106	Pin, Timing Indicator	—	—	85	Engine Accessories	OEM
635106	Pin, Timing Indicator	—	—	85	Engine Accessories	OEM
635158S4S18.00	hose ay	teledyne continental	—	85	Engine Accessories	OEM
635218S4S26.75	hose	teledyne continental	—	85	Engine Accessories	OEM
635218Y6S42.00	hose asm	teledyne continental	—	85	Consumables / Hardware	OEM
635439	BEARING	—	—	85	unknown
635448	CYLINDER	—	C185 Skywagon C210 Centurion	85	Engine Accessories	PMA
635448CN	CYLINDER	—	C402	85	Hydraulics	PMA
635448CP	CYLINDER	—	C206 Stationair C188 AgWagon	85	Hydraulics	OEM
635448CPA1	CYLINDER	—	C185 Skywagon	85	unknown
635557	Ring, Compression	—	—	85	Engine Accessories	OEM
635557	Ring, Compression	—	—	85	Engine Accessories	OEM
635616	PAN	—	C206 Stationair	85	unknown	OEM
635623	Plate, Counterweight Pin Retaining	—	—	85	Engine Accessories	OEM
635623	Plate, Counterweight Pin Retaining	—	—	85	Engine Accessories	OEM
635768	pin-dowel .125x.25	teledyne continental	—	85	Consumables / Hardware	OEM
635816	Ring, Lock	—	—	85	Engine Accessories	OEM
635816	Ring, Lock	—	—	85	Engine Accessories	OEM
635823	GASKET	—	C421 Golden Eagle	85	unknown	OEM
635832	CRANKSHAFT	—	C421 Golden Eagle	85	unknown
636144	Ring, Oil Control	—	—	85	Engine Accessories	OEM
636144	Ring, Oil Control	—	—	85	Engine Accessories	OEM
636242	GUIDE	—	—	85	unknown	OEM
636242P005	VALVE GUIDE	—	SR22	85	unknown	OEM
636242P010	Guide, Valve Exhaust	—	—	85	Engine Accessories	OEM
636242P015	Guide, Valve Exhaust	—	—	85	Engine Accessories	OEM
636242P020	Guide, Valve Exhaust	—	—	85	Engine Accessories	OEM