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
25C-47 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-48	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-48	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-48 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-48 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-48 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-48 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-48 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-48 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-49	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-49	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-49 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-49 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-49 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-49 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-50 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-50 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-50 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-50 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-51	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-51	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-51 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-51 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-51 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-51 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-51 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-51 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-52	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-52	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-52 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-52 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-52 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-52 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-53	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-53	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-53 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-53 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-53 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-53 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-54	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-54	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-54 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-54 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-54 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-54 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-54 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-54 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-55 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-55 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-55 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM