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
44-56	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-56 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-56 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-56 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-57 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-57 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-57 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-58	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-58	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-58 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-58 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-58 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-59	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-59	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-59 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-59 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-59 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-60	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-60	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-60 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-60 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-60 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-61	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-61	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-61 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-61 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-61 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-62 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-62 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-62 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-63	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-63	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-63 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-63 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-63 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-64	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-64	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-64 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-64 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-64 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44045	Pipe, Intake, Front Cylinder	—	—	85	Engine Accessories	OEM
44045	Pipe, Intake, Front Cylinder	—	—	85	Engine Accessories	OEM
446888	CYLINDER	—	—	85	unknown
44698	Guide, Valve	—	King Air 90	85	Engine Accessories	OEM
44698	Guide, Valve	—	King Air 90	85	Engine Accessories	OEM
447	CRANKSHAFT	—	—	85	Engine Accessories	OEM
44770	Lock, Exhaust Valve	—	King Air 90	85	Engine Accessories	OEM
44770	Lock, Exhaust Valve	—	King Air 90	85	Engine Accessories	OEM
450503-1	Bushing	Machen, Inc.	—	85	Consumables / Hardware	PMA
450565-3	Piston	Machen, Inc.	—	85	Engine Accessories	PMA