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-33	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-33	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-33 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-33 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-33 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-33 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-33 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-33 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-34	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-34	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-34 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-34 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-34 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-34 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-34 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-34 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-35	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-35	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-35 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-35 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-35 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-35 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-35 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-35 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-36	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-36	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-36 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-36 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-36 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-36 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-36 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-36 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-37	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-37	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-37 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-37 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-37 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-37 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-37 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-37 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-38	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-38	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-38 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-38 P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-38 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-38 P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-38 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-38 P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-39	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-39	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM