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
393949	Pin	VSE Aviation Services LLC	—	85	Engine Accessories	PMA
394354	Diaphragm, Balance	—	—	85	Engine Accessories	OEM
394539	Diaphragm	VSE Aviation Services LLC	King Air 90	85	Engine Accessories	PMA
394598 & 2630391	Acceleration Pump Diaphragm	—	—	85	Engine Accessories	OEM
394646	Diaphragm Assembly	VSE Aviation Services LLC	—	85	Engine Accessories	PMA
39487	CASE	—	—	85	unknown	OEM
394956	Diaphragm	VSE Aviation Services LLC	King Air 90	85	Engine Accessories	PMA
39523	Guide, Exhaust Valve	—	—	85	Engine Accessories	OEM
39523	Guide, Exhaust Valve	—	—	85	Engine Accessories	OEM
39523+10	Guide-Exhaust Valve	—	—	85	Engine Accessories	OEM
39523+20	Guide-Exhaust Valve	—	—	85	Engine Accessories	OEM
39523+3	Guide-Exhaust Valve	—	—	85	Engine Accessories	OEM
39523+30	Guide-Exhaust Valve	—	—	85	Engine Accessories	OEM
39523+40	Guide-Exhaust Valve	—	—	85	Engine Accessories	OEM
39523+5	Guide-Exhaust Valve	—	—	85	Engine Accessories	OEM
39523+50	Guide-Exhaust Valve	—	—	85	Engine Accessories	OEM
39523+60	Guide-Exhaust Valve	—	—	85	Engine Accessories	OEM
396462-1/-2.	Piston Ring	—	757-200 757-300+4	85	Engine Accessories	OEM
396462-1/-2.	Piston Ring	—	757-200 757-300+4	85	Engine Accessories	OEM
396541	Gasket	VSE Aviation Services LLC	King Air 90	85	Engine Accessories	PMA
396719	Diaphragm	—	—	85	Engine Accessories	OEM
397155	Gasket	VSE Aviation Services LLC	King Air 90	85	Engine Accessories	PMA
39785	LINK PIN	—	—	85	Consumables / Hardware	PMA
39785A	PIN	—	—	85	Consumables / Hardware	OEM
39785C	PIN	—	—	85	Consumables / Hardware
3979	GEAR	—	—	85	unknown	OEM
39892	COUNTERWEIGHT	—	—	85	unknown	OEM
399176	Assembly, Diaphragm	—	—	85	Engine Accessories	OEM
399177	Diaphragm	—	C340	85	Engine Accessories	OEM
399307	Diaphragm Assembly	—	—	85	Engine Accessories	OEM
399309	Diaphragm Assembly, Carburetor Front	—	—	85	Engine Accessories	OEM
399311	Rear Diaphragm Assembly	—	—	85	Engine Accessories	OEM
399352	CYLINDER HEAD	—	—	85	Engine Accessories	OEM
399353	EXHAUST VALVE	PWA	—	85	Engine Accessories	OEM
399353A1	CYLINDER HEAD	—	—	85	unknown	OEM
399353CA1	CYLINDER HEAD	—	—	85	unknown	OEM
399353CP	CYLINDER	—	—	85	unknown
399354	CYLINDER HEAD	PWA	—	85	Engine Accessories	OEM
399355	CYLINDER HEAD	PWC	—	85	Engine Accessories	OEM
399356	CYLINDER HEAD	PWA	—	85	Engine Accessories	OEM
399357	CYLINDER	—	—	85	Engine Accessories	OEM
399359	CYLINDER HEAD	—	—	85	Engine Accessories	PMA
399359CR	CYLINDER HEAD	—	—	85	unknown	OEM
399999	Gasket	VSE Aviation Services LLC	—	85	Engine Accessories	PMA
3B17131	Crankshaft Assembly	—	—	85	Engine Accessories	OEM
3B17131	Crankshaft Assembly	—	—	85	Engine Accessories	OEM
400353-0007	retaining ring	kelly aero power	—	85	Engine Accessories	OEM
400364-0000	retaining ring	kelly aero power	—	85	Engine Accessories	OEM
400500-0925	coupling 1-15	kelly aero power	—	85	Engine Accessories	OEM
401093	NR 3 CYLINDER	—	—	85	Hydraulics	OEM