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
31CD-39 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-39 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-39 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-39 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-39 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-39 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-40	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-40	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-40 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-40 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-40 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-40 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-40 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-40 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-41	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-41	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-41 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-41 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-41 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-41 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-41 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-41 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-42	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-42	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-42 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-42 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-42 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-42 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-42 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-42 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-43	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-43	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-43 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-43 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-43 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-43 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-43 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-43 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-44-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-44-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-44-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-45-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-45-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-45-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-46-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-46-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-46-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-47-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-47-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-47-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM