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-50	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-50	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-50-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-50-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-50-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-51	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-51	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-51-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-51-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-51-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-52	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-52	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-52-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-52-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-52-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-53	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-53	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-53-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-53-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-53-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-54	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-54	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-54-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-54-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-54-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-55	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-55	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-55-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-55-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-55-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-56	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-56	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-56-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-56-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-56-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-57	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-57	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-57-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-57-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-57-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-58	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-58	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-58-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-58-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-58-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-59	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-59	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-59-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-59-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31C-59-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM