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
31C-60	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-60	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-60-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-60-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-60-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-61	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-61	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-61-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-61-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-61-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-62	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-62	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-62-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-62-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-62-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-63	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-63	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-63-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-63-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-63-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-64	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-64	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-64-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-64-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-64-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-8-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-8-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-8-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-9	Stud, 5/16-18UNC	—	—	85	Consumables / Hardware	OEM
31C-9-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-9-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-9-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C12	STUD	—	—	85	Consumables / Hardware	OEM
31C24	STUD	LYC	—	85	Consumables / Hardware	OEM
31CD-10	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-10	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-10-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-10-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-10-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-11	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-11	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-11-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-11-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-11-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-12	Stud, 5/16-18UNC	—	—	85	Consumables / Hardware	OEM
31CD-12-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-12-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-12-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-13	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-13	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM