ATA 85 — Reciprocating Engine

22,891 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
-05 & -06	Rotomaster Controller	—	—	85	—	OEM
-5 or -6 is installed.	Piston Ring	—	—	85	—	OEM
-5 or -6 is installed.	Piston Ring	—	—	85	—	OEM
-A20P	Barrel	—	—	85	—	OEM
-A20P replacing Textron Lycoming Cylinder Assemblies 16B21508	Barrel, Narrow-Deck	—	—	85	—	OEM
-A21P and SL32000NA-SF	Barrel, Narrow-Deck	—	—	85	—	OEM
-A21P replacing Textron Lycoming Cylinder Assemblies LW-12417	Barrel	—	—	85	—	OEM
-A21P replacing Textron Lycoming Cylinder Assemblies LW-12422 LW-12423	Barrel, Narrow-Deck	—	—	85	—	OEM
-A21P replacing Textron Lycoming Cylinder Assemblies LW-12427	Barrel	—	—	85	—	OEM
' 648040CP	Ring	—	—	85	—	OEM
(used with 635815)	Ring, Lock	—	—	85	—	OEM
(used with 635815)	Ring, Lock	—	—	85	—	OEM
& 73111	Valve, Exhaust	—	—	85	—	OEM
& 74541	Valve, exh.	—	—	85	—	OEM
& LW13623-1	SL18729	—	—	85	—	OEM
0024100143	PAN	—	—	85	unknown	OEM
0200	PISTON	—	C150	85	unknown	OEM
020F-0001	valve housing	kelly aero power	—	85	Engine Accessories	OEM
0235L2C	CRANKCASE	—	C152	85	unknown	OEM
025F-0001	rotor	kelly aero power	—	85	Engine Accessories	OEM
025F-0002	coupling	kelly aero power	—	85	Engine Accessories	OEM
025F-0004	coupling	kelly aero power	—	85	Engine Accessories	OEM
02721011001R11	CLUTCH	THIELT	DA42	85	Engine Accessories	OEM
02722001002R1	CYLINDER HEAD	—	DA42	85	unknown	OEM
030F-0002	pump housing	kelly aero power	—	85	Engine Accessories	OEM
030F-0005	pump housing	kelly aero power	—	85	Engine Accessories	OEM
0320	TUBE	—	PA-23 Apache	85	unknown
0360A3A	CRANKCASE	LYC	—	85	Engine Accessories
0360C4P	ENGINE	LYC	PA-18 Super Cub	85	Engine Accessories	OEM
0360E1A6D	CRANKCASE	—	PA-44 Seminole	85	unknown	OEM
04-02534	Superior M25988/1-114 O-Ring	SUPERIOR	—	85	Consumables / Hardware	PMA
04-04269	Stud 0550198-1	—	—	85	Consumables / Hardware	unknown
040034312	BREATHER	—	C152	85	unknown
040034313	BREATHER TUBE	—	C152	85	Consumables / Hardware	PMA
0450502-27	Baffle Assembly	—	C150	85	Engine Accessories	OEM
0450502-36	Baffle Assembly	—	C150	85	Engine Accessories	OEM
0450502-38	Baffle Assembly	—	C150	85	Engine Accessories	OEM
0450502-42	Baffle Assembly	—	C150	85	Engine Accessories	OEM
0450502-5	Baffle Assembly	—	C150	85	Engine Accessories	OEM
0455015-7	CLIP	—	C152	85	—	OEM
0455018-22	BAFFLE ASSY	—	C152	85	—	OEM
0455018-25	Baffle Assy.	—	—	85	Engine Accessories	OEM
0455018-25	Baffle Assy.	—	—	85	Engine Accessories	OEM
0455018-27	Baffle Assy.	—	—	85	Engine Accessories	OEM
05-11931	Silicone Valve Cover Gaskets	—	—	85	Consumables / Hardware	unknown
05-29085	#3 Rocker Cover Bare Blue Seals #3 Roc#3 Rocker Cover Bare Blue Seals AF0555302-13-BRBL	McFarlane Aviation	—	85	Engine Accessories	PMA
05-29086	#3 Rocker Cover Bare Orange Seals AF0555302-13-BROR	McFarlane Aviation	—	85	Engine Accessories	PMA
05-29087	#3 Rocker Cover Assy Powder Coat AF0555302-13-PCBK	McFarlane Aviation	—	85	Engine Accessories	PMA
05-29088	#3 Rocker Cover Pc Blue Seals AF0555302-13-PCBL	McFarlane Aviation	—	85	Engine Accessories	PMA
05-29089	#3 Rocker Cover Pc Orange Seals AF0555302-13-PCOR	McFarlane Aviation	—	85	Engine Accessories	PMA