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-64-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-8	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-8	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-8-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-8-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-8-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-9	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-9	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-9-P03	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-9-P07	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
31CD-9-P12	Stud, 5/16 IN DIA, Coarse Thread	—	—	85	Engine Accessories	OEM
32000WLA1	CYLINDER	—	—	85	Engine Accessories	OEM
320020-001 & -002	Wastegate Assembly	Machen, Inc.	—	85	Engine Accessories	PMA
320025-001 & -002	Spring - Waste Gate	Machen, Inc.	—	85	Engine Accessories	PMA
320H	CRANKCASE	—	C172 Skyhawk	85	unknown
32122-1	aircraft engine camshaft	teledyne continental	—	85	Engine Accessories	OEM
32122-2	aircraft engine camshaft	teledyne continental	—	85	Engine Accessories	OEM
32154A	ROD PIN	—	—	85	Consumables / Hardware	PMA
322451-10	ring set	other	—	85	Engine Accessories	OEM
322451-6	ring set	other	—	85	Engine Accessories	OEM
322451-7	ring set	other	—	85	Engine Accessories	OEM
3227	CASE	LYC	MD 500	85	Engine Accessories	PMA
323528	Piston Ring Set	—	A318 A321+4	85	Engine Accessories	OEM
32544	Guide, Intake Valve	—	—	85	Engine Accessories	OEM
32544	Guide, Intake Valve	—	—	85	Engine Accessories	OEM
327626	CYLINDER HEAD	—	—	85	Engine Accessories	PMA
327627	CYLINDER ASSY	—	Douglas DC-6	85	Hydraulics	OEM
327628	CYLINDER HEAD	PWA	Douglas DC-6	85	Engine Accessories	OEM
327629	CYLINDER	—	—	85	unknown
32983	ROD BEARING	—	—	85	unknown	OEM
32994	Cylinder Barrel	Design Engineering	—	85	Engine Accessories	PMA
330A85-0122-48	support lh	airbus helicopters inc american eurocopter	—	85	Structures	OEM
330A85-0173-15	lug	airbus helicopters inc american eurocopter	—	85	Structures	OEM
330A85-0173-25	lug	airbus helicopters inc american eurocopter	—	85	Structures	OEM
331-A	Engine Heater	Reiff Corporation	—	85	Electromechanical	PMA
331107	VALVE	—	—	85	unknown
33226	VALVE	—	—	85	unknown	OEM
33250	ROCKER SHAFT	—	—	85	Engine Accessories	PMA
332A85-0010-02	rh casing	Eurocopter	AS332 Super Puma	85	Structures	OEM
332A85-0116-20	plate	airbus helicopters inc american eurocopter	AS332 Super Puma	85	Structures	OEM
332A85-0116-27	plate	airbus helicopters inc american eurocopter	AS332 Super Puma	85	Structures	OEM
332A85-0123-24	entretoise	airbus helicopters inc american eurocopter	—	85	Consumables / Hardware	OEM
332A85-0142-20	lh side support	Eurocopter	—	85	Structures	OEM
332P85-1001-20	seal	Eurocopter	—	85	Consumables / Hardware	OEM
333968	VALVE	—	—	85	unknown
33640	PUSHROD	PWA	—	85	Engine Accessories
33641	HOUSING	PWA	Douglas DC-6	85	Engine Accessories	unknown
33643	PUSHROD	—	—	85	Engine Accessories	OEM
33645	PUSHROD TUBE	—	—	85	Engine Accessories	OEM
350027	CYLINDER	—	C337 Skymaster	85	Engine Accessories	PMA