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
48564	CASE	—	—	85	unknown	OEM
48684	Cylinder Baffle L. H. - front	—	—	85	Engine Accessories	OEM
48684	Cylinder Baffle L. H. - front	—	—	85	Engine Accessories	OEM
493476	O-RING	—	Douglas DC-6	85	unknown	OEM
4A022-1	Air-box Assembly, Carburetor	Del-Air	—	85	Engine Accessories	PMA
4SL36006WA20P	CYLINDER	—	C172S	85	Engine Accessories	OEM
50-14	Stud, 1/2 Dia.	—	—	85	Consumables / Hardware	OEM
50-14	Stud, 1/2 Dia.	—	—	85	Consumables / Hardware	OEM
50-14 P03	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-14 P07	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-14 P12	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-15 P03	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-15 P12	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-16 P03	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-16 P07	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-16 P12	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-29	Stud 1/2 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-29	Stud 1/2 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-29 P03	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-29 P07	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-29 P12	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-52	Stud 1/2 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-52	Stud 1/2 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-52 P03	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-52 P07	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
50-52 P12	Stud ½ Dia. Fine Thread	—	—	85	Engine Accessories	OEM
500057	Spacer, Bearing	Air Repair Inc	—	85	Engine Accessories	PMA
500059	Retainer, Bearing Lock	Air Repair Inc	—	85	Engine Accessories	PMA
500061	Retainer, Bearing	Air Repair Inc	—	85	Engine Accessories	PMA
500066	Lock, Bearing	Air Repair Inc	—	85	Engine Accessories	PMA
5005129-OAA	Piston	Omega Aircraft Articles LLC	—	85	Engine Accessories	PMA
5006521-OAA	Piston	Omega Aircraft Articles LLC	—	85	Engine Accessories	PMA
5015	CYLINDER	LYC	C172 Skyhawk PA-28 Cherokee+1	85	Engine Accessories	OEM
50153813	CRANKCASE	LYC	C172 Skyhawk PA-28 Cherokee	85	Engine Accessories
5015P07	STUD	—	PA-23 Apache	85	Consumables / Hardware	PMA
501867	LOCK TAB	—	PA-28 Cherokee M20K	85	unknown
501868	ROCKER	CONT	C421 Golden Eagle	85	Engine Accessories	OEM
502020-3	ring-ret-int	teledyne continental	—	85	Consumables / Hardware	OEM
502317	Ring, Retaining	—	—	85	Consumables / Hardware	OEM
502317	Ring, Retaining	—	—	85	Consumables / Hardware	OEM
50256	airbox kit	teledyne continental	—	85	Engine Accessories	OEM
502887-3	ring-ret.522108	teledyne continental	—	85	Consumables / Hardware	OEM
50339001	TUBE	—	SR20	85	unknown	OEM
50B043	ROD	—	—	85	unknown	OEM
50U391	Thermocouple- Probe	—	—	85	Engine Accessories	OEM
50U391	Thermocouple- Probe	—	—	85	Engine Accessories	OEM
510384	CONNECTING ROD	—	—	85	unknown	OEM
515152	Guide, Intake Valve	—	—	85	Engine Accessories	OEM
515152	Guide, Intake Valve	—	—	85	Engine Accessories	OEM
519513	CASE	—	Douglas DC-6	85	unknown	OEM