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
3014229	Performed Packing	—	—	85	Engine Accessories	OEM
3014230	PREFORMED PACKING	—	—	85	Consumables / Hardware	OEM
3034292	OIL FILTER	—	PC-12	85	unknown	OEM
303821	CRANKCASE	—	PA-34 Seneca	85	Engine Accessories	OEM
304149	STUD	—	—	85	unknown
304430	BOLT	—	—	85	unknown	OEM
30506353	ROTOR	Honeywell	Falcon 2000	85	Electromechanical	OEM
305925801	OIL FILTER	—	DHC-6 Twin Otter C208B Grand Caravan+1	85	Engine Accessories	OEM
310067-1, -501	Box Assembly	Machen, Inc.	—	85	Engine Accessories	PMA
3112	Gasket, Accessory Case	Air Repair Inc	—	85	Engine Accessories	PMA
3116	STUD	LYC	C172 Skyhawk PA-44 Seminole	85	Consumables / Hardware	OEM
3130S85-40-250	rod assy	Eurocopter	—	85	unknown	OEM
314446	Block-Cylinder	—	—	85	Engine Accessories	OEM
3162926-2PR	Ring Piston	Precision Ring, Inc.	—	85	Engine Accessories	PMA
3162926-4PR	Ring, Piston Matched Set	Precision Ring, Inc.	DC-10-30 DC-10-30F	85	Engine Accessories	PMA
3162926JP-8	Ring Set	Jet Parts Engineering, Inc. (JPE)	777-300ER 777-200LR	85	Engine Accessories	PMA
317206	CYLINDER	—	M20K	85	unknown
31820	STUD	PWA	—	85	Consumables / Hardware
319721	ACTUATOR	AIRESRCH	Douglas DC-6	85	Electromechanical	OEM
31C-11-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-11-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-11-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-14	Stud, 5/16-18UNC	—	—	85	Consumables / Hardware	OEM
31C-14-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-14-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-14-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-15	Stud, 5/16-18UNC	—	—	85	Consumables / Hardware	OEM
31C-15-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-15-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-15-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-16	Stud, 5/16-18UNC	—	—	85	Consumables / Hardware	OEM
31C-16-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-16-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-16-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-17	Stud, 5/16-18UNC	—	—	85	Consumables / Hardware	OEM
31C-17-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-17-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-17-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-18	Stud, 5/16-18UNC	—	—	85	Consumables / Hardware	OEM
31C-18-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-18-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-18-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-19-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-19-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-19-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-20	Stud, 5/16-18UNC	—	—	85	Consumables / Hardware	OEM
31C-20-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-20-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-20-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-21-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM