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-17 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-17 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-17 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-18 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-18 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-18 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-18 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-19	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-19	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-19 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-19 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-19 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-20 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-20 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-20 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-21	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-21	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-21 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-21 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-21P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-22	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-22	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-22 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-22 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-22 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-23	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-23	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-23 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-23 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-23 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-24 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-24 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-24 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-25	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-25	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-25 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-25 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-25 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-26	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-26	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-26 P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-26 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-26 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-27	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-27	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-27 P07	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-27 P12	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-27P03	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-28	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM
25C-28	Stud, 1/4 Dia. Coarse Thread	—	—	85	Engine Accessories	OEM