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
07-07707	TCM Ring - Piston 648041P005	—	—	85	Engine Accessories	OEM
07-07709	TCM Ring - Piston 648042P005	—	—	85	Engine Accessories	OEM
07-07711	TCM Ring Set - Chrome Barrel 649225Cp	—	—	85	Engine Accessories	OEM
07-07712	TCM Ring - Set 649225P005	—	—	85	Engine Accessories	OEM
07-07714	TCM Ring - Set 649226P005	—	—	85	Engine Accessories	OEM
07-07719	TCM Ring Set - Single Piston 649632A1P005	—	—	85	Engine Accessories	OEM
07-07720	TCM Ring Set S 649632A1P015	—	—	85	Engine Accessories	OEM
07-07722	TCM Ring Piston 649632P005	—	—	85	Engine Accessories	OEM
07-07750	TCM Insert - Exhaust Valve Seat 654567P005	—	—	85	Engine Accessories	OEM
07-07751	TCM Insert - Exhaust Valve Seat 654567P010	—	—	85	Engine Accessories	OEM
07-07753	TCM Insert - Exhaust Valve Seat 654567P030	—	—	85	Engine Accessories	OEM
07-07756	TCM Ring Set 654716P010	—	—	85	Engine Accessories	OEM
07-07760	TCM Ring - Piston 654717P015	—	—	85	Engine Accessories	OEM
07-07761	TCM Ring - Piston 5.25 #2 654719Cp	—	—	85	Engine Accessories	OEM
07-07764	TCM Ring - Piston 5.25 #2 654719P015	—	—	85	Engine Accessories	OEM
07-07773	TCM Piston Set - Balanced 654832Bp	—	—	85	Engine Accessories	OEM
07-07774	TCM Piston - 5.00 Dia 654832P015	—	—	85	Engine Accessories	OEM
07-07775	TCM Piston - Set 654832P015Bp	—	—	85	Engine Accessories	OEM
07-07776	TCM Piston - Set Balanced 654833Bp	—	—	85	Engine Accessories	OEM
07-07777	TCM Piston - 5.00 Dia 654833P015	—	—	85	Engine Accessories	OEM
07-07780	TCM Piston 5.25 Dia C.R 8.5:1 654836P010	—	—	85	Engine Accessories	OEM
07-07781	TCM Piston - Set 654836P010Bp	—	—	85	Engine Accessories	OEM
07-07782	TCM Piston 5.25 Dia C.R 8.5:1 654836P015	—	—	85	Engine Accessories	OEM
07-07783	TCM Piston Set - Balanced 654840Bp	—	—	85	Engine Accessories	OEM
07-07784	TCM Piston 5.25 Dia C.R 7.5:1 654840P010	—	—	85	Engine Accessories	OEM
07-07785	TCM Piston - Balanced 654840P010Bp	—	—	85	Engine Accessories	OEM
07-07786	TCM Piston 5.25 Dia C.R 7.5:1 654840P015	—	—	85	Engine Accessories	OEM
07-07787	TCM Piston - Balanced 654840P015Bp	—	—	85	Engine Accessories	OEM
07-07788	TCM Piston Set - Balanced 654841Bp	—	—	85	Engine Accessories	OEM
07-07789	TCM Piston - 4.06 Dia 6.3:1 654841P015	—	—	85	Engine Accessories	OEM
07-07791	TCM Piston Set - Balanced 654850Bp	—	—	85	Engine Accessories	OEM
07-07794	TCM Piston 5.25 Dia C.R 8.5:1 654850P015	—	—	85	Engine Accessories	OEM
07-07795	TCM Piston - Balanced 654850P015Bp	—	—	85	Engine Accessories	OEM
07-07799	TCM Piston - 4.06 Dia 7.0:1 654853P015	—	—	85	Engine Accessories	OEM
07-07802	TCM Piston - Balanced 654857Bp	—	—	85	Engine Accessories	OEM
07-07803	TCM Piston 5.25 Dia C.R 8.5:1 654857P010	—	—	85	Engine Accessories	OEM
07-07804	TCM Piston - Set 654857P010Bp	—	—	85	Engine Accessories	OEM
07-07805	TCM Piston 5.25 Dia C.R 8.5:1 654857P015	—	—	85	Engine Accessories	OEM
07-07806	TCM Piston - Set 654857P015Bp	—	—	85	Engine Accessories	OEM
07-07807	TCM Piston Set - Balanced 654858Bp	—	—	85	Engine Accessories	OEM
07-07808	TCM Piston Set - Balanced 654859Bp	—	—	85	Engine Accessories	OEM
07-07809	TCM Piston - 4.44 Dia 654859P015	—	—	85	Engine Accessories	OEM
07-07810	TCM Piston - Set 654859P015Bp	—	—	85	Engine Accessories	OEM
07-07813	TCM Piston - 4.44 Dia 654861P015	—	—	85	Engine Accessories	OEM
07-07814	TCM Piston - Set 654861P015Bp	—	—	85	Engine Accessories	OEM
07-07815	TCM Piston Set - Balanced 654862Bp	—	—	85	Engine Accessories	OEM
07-07816	TCM Piston - 5.00 Dia 654862P015	—	—	85	Engine Accessories	OEM
07-07817	TCM Piston - Set 654862P015Bp	—	—	85	Engine Accessories	OEM
07-07819	TCM Insert - Valve Seat Exh 654956P010	—	—	85	Engine Accessories	OEM
07-07825	TCM Guide - Valve 655166P005	—	—	85	Engine Accessories	OEM