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
81-10007-( )	Rear Air Scoop Assembly	Machen, Inc.	C337 Skymaster	85	Structures	PMA
81-10009-( )	Rear Inlet Duct Assembly	Machen, Inc.	C337 Skymaster	85	Engine Accessories	PMA
81-10015-( )	Front Intercooler Assembly	Machen, Inc.	C337 Skymaster	85	Engine Accessories	PMA
81-10017-( )	Front Intercooler Assembly	Machen, Inc.	C337 Skymaster	85	Engine Accessories	PMA
81-10018-( )	Rear Intercooler Assembly	Machen, Inc.	C337 Skymaster	85	Engine Accessories	PMA
81-10021-( )	Induction Tube Modifications	Machen, Inc.	C337 Skymaster	85	Engine Accessories	PMA
810533R	BEARING	—	C404 Titan	85	unknown	OEM
810632	CRANKSHAFT	—	C404 Titan	85	unknown
810809	HOUSING	—	—	85	unknown	OEM
81230	Shaft, valve rocker	Design Engineering	King Air 90	85	Engine Accessories	PMA
81230R	Shaft, valve rocker	Design Engineering	King Air 90	85	Engine Accessories	PMA
814858-3AES	Ring, Piston Set	Aviation Engineered Services	—	85	Engine Accessories	PMA
81619401	BEARING	—	PA-31 Navajo	85	unknown
81888	PISTON	—	—	85	Engine Accessories	PMA
8191+20	Seat-Valve Intake	—	—	85	Engine Accessories	OEM
8191+5	Seat-Valve Intake	—	—	85	Engine Accessories	OEM
82-00070	machine screw	teledyne continental	—	85	Consumables / Hardware	OEM
82-00071	internal drive screw	teledyne continental	—	85	Consumables / Hardware	OEM
82-9103	ball bearing	teledyne continental	—	85	Engine Accessories	OEM
821016R	CRANKCASE	—	C210 Centurion	85	unknown	OEM
827	SEAL	—	747-100 747-200+1	85	Consumables / Hardware	PMA
834050	RING GEAR	—	—	85	Engine Accessories	PMA
83477	INTAKE VALVE	PWA	Douglas DC-6	85	Engine Accessories	OEM
836752R	CRANKCASE	—	—	85	Engine Accessories	PMA
837362-49	gasket	other	—	85	Engine Accessories	OEM
838092R	CRANKCASE	—	C182 Skylane	85	Engine Accessories	PMA
839B304P001	Bearing, Piston	—	—	85	Engine Accessories	OEM
839B304P001	Bearing, Piston	—	—	85	Engine Accessories	OEM
839B304P001ACD	Bearing, Piston	Aircraft Component Design LLC	—	85	Engine Accessories	PMA
840091	THRU BOLT	Rotax	—	85	Consumables / Hardware	OEM
840101	SCREW	Rotax	—	85	unknown	OEM
840755	STUD	—	—	85	unknown
8408	VALVE GUIDE	—	—	85	Engine Accessories	unknown
84086	CYLINDER	—	—	85	Hydraulics	OEM
84088	CYLINDER	PWC	—	85	Hydraulics	OEM
84088CP	CYLINDER	—	—	85	Hydraulics	OEM
843-B	Gasket-Oil Pump	—	—	85	Engine Accessories	OEM
843-B	Gasket-Oil Pump	—	—	85	Engine Accessories	OEM
848-B	Gasket - Carburetor Mount	—	—	85	Engine Accessories	OEM
848-B	Gasket - Carburetor Mount	—	—	85	Engine Accessories	OEM
85-00-00	Vortez Generators Installation Kit	Ram Aircraft Limited Partnership	C425 Corsair	85	Engine Accessories	PMA
85-10003-( )	Inlet Duct	Machen, Inc.	—	85	Engine Accessories	PMA
85-10005-( )	Induction Tube Assemblies	Machen, Inc.	—	85	Engine Accessories	PMA
85-10006-( )	Miscellaneous Parts	Machen, Inc.	—	85	Engine Accessories	PMA
85-10009-( )	Intercooler Final Assembly	Machen, Inc.	—	85	Engine Accessories	PMA
850710	OIL SEAL	—	—	85	Consumables / Hardware
850940	SEAL	—	—	85	Consumables / Hardware	PMA
850991R	CYLINDER HEAD	—	—	85	Engine Accessories	OEM
852-D	Gasket - Accessory Drive Housing	—	—	85	Engine Accessories	OEM
852-D	Gasket - Accessory Drive Housing	—	—	85	Engine Accessories	OEM