ATA 85 — Reciprocating Engine

22,971 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
07-07112	TCM Rocker Assembly - Valve 652966	—	—	85	Engine Accessories	OEM
07-07178	TCM Insert - Exhaust Valve Seat 654567	—	—	85	Engine Accessories	OEM
07-07191	TCM Piston - 5.00 Dia 654829	—	—	85	Engine Accessories	OEM
07-07192	TCM Piston - 5.00 Dia 654832	—	—	85	Engine Accessories	OEM
07-07195	TCM Piston - 4.06 Dia 6.3:1 654841	—	—	85	Engine Accessories	OEM
07-07197	TCM Piston - 4.06 Dia 7.3:1 654858	—	—	85	Engine Accessories	OEM
07-07200	TCM Piston - 5.00 Dia 654862	—	—	85	Engine Accessories	OEM
07-07214	TCM Guide - Valve 655166	—	—	85	Engine Accessories	OEM
07-07217	TCM Tube Assembly Intake Manifold 655238	—	—	85	Engine Accessories	OEM
07-07222	TCM Guide - Valve Intake 655523	—	—	85	Engine Accessories	OEM
07-07223	TCM Guide - Intake Valve 655525	—	—	85	Engine Accessories	OEM
07-07224	TCM Guide - Exhaust Valve 655526	—	—	85	Engine Accessories	OEM
07-07225	TCM Guide - Intake Valve 655527	—	—	85	Engine Accessories	OEM
07-07237	TCM Valve Exhaust 655771	—	—	85	Engine Accessories	OEM
07-07238	TCM Valve - Exhaust 655866	—	—	85	Engine Accessories	OEM
07-07239	TCM Valve Intake 655867	—	—	85	Engine Accessories	OEM
07-07242	TCM Rod Assembly Connecting 655910	—	—	85	Engine Accessories	OEM
07-07243	TCM Rod Assembly Connecting 655911	—	—	85	Engine Accessories	OEM
07-07251	TCM Valve - Intake 655970	—	—	85	Engine Accessories	OEM
07-07252	TCM Valve - Exhaust 655971	—	—	85	Engine Accessories	OEM
07-07253	TCM Valve Exhaust 655972	—	—	85	Engine Accessories	OEM
07-07296	TCM Valve Rocker Shaft 656642	—	—	85	Engine Accessories	OEM
07-07300	TCM Gear - Cam 656818	—	—	85	Engine Accessories	OEM
07-07303	TCM Gear - Cam 656914	—	—	85	Engine Accessories	OEM
07-07304	TCM Gear - Crankshaft Large 656991	—	—	85	Engine Accessories	OEM
07-07307	TCM Ind. Tube 1-3-5 Fwd 657185	—	—	85	Engine Accessories	OEM
07-07321	TCM Valve - Intake 657512	—	—	85	Engine Accessories	OEM
07-07322	TCM Piston 8.5:1 C R 657562	—	—	85	Engine Accessories	OEM
07-07336	TCM Piston 5.25 Dia C.R.7.5:1 657989	—	—	85	Engine Accessories	OEM
07-07507	TCM Housing - Push Rod 21284P005	—	—	85	Engine Accessories	OEM
07-07508	TCM Guide Valve Intake 21419P010	—	—	85	Engine Accessories	OEM
07-07510	TCM Guide - Valve Exh 25276P010	—	—	85	Engine Accessories	OEM
07-07511	TCM Guide - Valve Exh 25276P020	—	—	85	Engine Accessories	OEM
07-07552	TCM Ins-I/Vl Seat 630591P010	—	—	85	Engine Accessories	OEM
07-07616	TCM Piston - Ring 639567P015	—	—	85	Engine Accessories	OEM
07-07677	TCM Ins-I/Vl Seat 646929P010	—	—	85	Engine Accessories	OEM
07-07678	TCM Ins-I/Vl Seat 646929P015	—	—	85	Engine Accessories	OEM
07-07679	TCM Ins I/Vl Seat 646929P020	—	—	85	Engine Accessories	OEM
07-07680	TCM Ins-I/Vl Seat 646929P030	—	—	85	Engine Accessories	OEM
07-07690	TCM Ring - Piston 648009P005	—	—	85	Engine Accessories	OEM
07-07691	TCM Ring - Piston 648009P015	—	—	85	Engine Accessories	OEM
07-07693	TCM Ring - Piston 648010P005	—	—	85	Engine Accessories	OEM
07-07694	TCM Ring - Piston 648010P015	—	—	85	Engine Accessories	OEM
07-07695	TCM Ring Assembly - Piston 648011Cp	—	—	85	Engine Accessories	OEM
07-07698	TCM Ring - Piston 648012P005	—	—	85	Engine Accessories	OEM
07-07699	TCM Ring - Piston 648012P015	—	—	85	Engine Accessories	OEM
07-07701	TCM Ring - Piston 648039P005	—	—	85	Engine Accessories	OEM
07-07702	TCM Ring - Piston 648039P015	—	—	85	Engine Accessories	OEM
07-07705	TCM Ring - Piston 648040P015	—	—	85	Engine Accessories	OEM
07-07706	TCM Ring Assembly - Piston 648041Cp	—	—	85	Engine Accessories	OEM