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
654840 P015654724 P015648033 P015646303 P015642761 P015	Piston	—	—	85	Engine Accessories	OEM
654840C	PISTON	—	747-400 767-200+4	85	unknown	PMA
654850	Piston, 5.25 Dia.	—	—	85	Engine Accessories	OEM
654850	Piston, 5.25 Dia.	—	—	85	Engine Accessories	OEM
654853B	PISTON	CONT	C172 Skyhawk	85	Engine Accessories	OEM
654853BP	piston ser	teledyne continental	—	85	Engine Accessories	OEM
654853BP-1P015	piston-set	teledyne continental	—	85	Engine Accessories	OEM
654861BP-2	piston set-balanced	teledyne continental	—	85	Engine Accessories	OEM
654862	Piston 5.0 Dia., 7.1 1 comp. ratio	—	—	85	Engine Accessories	OEM
654862	Piston 5.0 Dia., 7.1 1 comp. ratio	—	—	85	Engine Accessories	OEM
654867P010	piston 5.25 dia	teledyne continental	—	85	Engine Accessories	OEM
654928	cyl asm-mach	teledyne continental	—	85	Engine Accessories	OEM
654928A1	cyl and vlv asm	teledyne continental	—	85	Engine Accessories	OEM
654928A3	cyl and vlv asm loaded	teledyne continental	—	85	Engine Accessories	OEM
654956	insert-val	teledyne continental	—	85	Engine Accessories	OEM
654956P005	insert valve seat exh	teledyne continental	—	85	Engine Accessories	OEM
654956P020	insert-valve seat exhaust	teledyne continental	—	85	Engine Accessories	OEM
654957	insert-valve	teledyne continental	—	85	Engine Accessories	OEM
654957P010	insert 1-6	teledyne continental	—	85	Engine Accessories	OEM
654958A1	cyl and vlv asm	teledyne continental	—	85	Engine Accessories	OEM
654958A3BP	cyl kit-bp	teledyne continental	—	85	Engine Accessories	OEM
654958A4	cyl kit	teledyne continental	—	85	Engine Accessories	OEM
654959A1	CYLINDER	—	747-400 C182 Skylane+1	85	unknown	OEM
654959A6	cyl and vlv asm loaded	teledyne continental	—	85	Engine Accessories	OEM
654959A6BP	cyl and vlv asm bal load	teledyne continental	—	85	Engine Accessories	OEM
654960A1	CYLINDER	—	747-400 767-200+4	85	unknown
654960A2	cyl and vlv asm	teledyne continental	—	85	Engine Accessories	OEM
654960A6BP	cyl and vlv asm bal load	teledyne continental	—	85	Engine Accessories	OEM
654961	CYLINDER	—	C206 Stationair C185 Skywagon	85	Electromechanical	PMA
654961A1P010	cyl and vlv asm	teledyne continental	—	85	Engine Accessories	OEM
654961A2	CYLINDER	—	747-400 767-200+3	85	unknown
654961A7	cyl and vlv asm loaded	teledyne continental	—	85	Engine Accessories	OEM
654961A7BP	CYLINDER	—	747-400 767-300	85	Engine Accessories	OEM
654961A8BP	cyl and vlv asm bal load	teledyne continental	—	85	Engine Accessories	OEM
654961A9BP	cyl and vlv asm ld bal	teledyne continental	—	85	Engine Accessories	OEM
654961AZ	CYLINDER	—	747-400 767-200+4	85	unknown
654961C	CYLINDER HEAD	CONT	C206 Stationair C185 Skywagon	85	Engine Accessories
654962A2	SPRING	—	747-400 767-200+4	85	Consumables / Hardware
654963	cyl asm-mach	teledyne continental	—	85	Engine Accessories	OEM
654963A1	cyl.and vlv asm	teledyne continental	—	85	Engine Accessories	OEM
654963A3	cyl and vlv asm loaded	teledyne continental	—	85	Engine Accessories	OEM
654965	cyl asm-mach	teledyne continental	—	85	Engine Accessories	OEM
654965A3BP	cyl kit-bp	teledyne continental	—	85	Engine Accessories	OEM
654966	CYLINDER HEAD	—	747-400 767-200+3	85	unknown
654966A	CYLINDER	—	747-400 767-300ER+1	85	unknown	OEM
654966A10	cyl and vlv asm loaded	teledyne continental	—	85	Engine Accessories	OEM
654966A10BP	cyl and vlv asm bal load	teledyne continental	—	85	Engine Accessories	OEM
654966A11BP	cyl and vlv asm load bal	teledyne continental	—	85	Engine Accessories	OEM
654966A12	cyl and vlv asm loaded	teledyne continental	—	85	Engine Accessories	OEM
654966A12BP	cyl and vlv asm bal load	teledyne continental	—	85	Engine Accessories	OEM