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
430358	ROCKER SHAFT	CURTIS	—	85	Engine Accessories	OEM
430565-003	Piston	Machen, Inc.	—	85	unknown	PMA
4317	Spring Inner Valve	Air Repair Inc	—	85	Powerplant / Nacelle	PMA
4318	Spring Outer Valve	Air Repair Inc	—	85	Powerplant / Nacelle	PMA
4331	Rocker Cover Gasket	Air Repair Inc	—	85	Engine Accessories	PMA
433419	CYLINDER	CURTIS	767-400 737 MAX 7+4	85	Engine Accessories
434011	CYLINDER	—	—	85	Hydraulics	OEM
434176	TURBINE	CURTIS	—	85	Environmental / Cabin	OEM
4342-M	intake pipe modified	jacobs	—	85	Engine Accessories	OEM
4357-S	Exhaust Valve Seat	Air Repair Inc	—	85	Engine Accessories	PMA
4358	Valve Stem Seal	Air Repair Inc	—	85	Engine Accessories	PMA
4378A1	GEAR	—	—	85	unknown	OEM
43905	Liner, Exhaust	—	—	85	Engine Accessories	OEM
43905	Liner, Exhaust	—	—	85	Engine Accessories	OEM
44-13 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-13 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-13 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-14	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-14	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-14 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-14 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-14 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-15	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-15	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-15 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-15 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-15 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-16	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-16	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-16 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-16 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-16 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-17	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-17	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-17 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-17 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-17 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-18	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-18	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-18 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-18 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-18 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-19	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-19	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-19 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-19 P07	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-19 P12	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-20	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-20	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM
44-20 P03	Stud, 7/16 Dia. Fine Thread	—	—	85	Engine Accessories	OEM