ATA 72 — Engine - Turbine / Turboprop

37,874 parts classified under this chapter

Reliability rollup

100%Median scrap propensity

5,464 parts · 14,008 SDR reports

From FAA Service Difficulty Reports

Life-limited parts — how engine material is really valued

Engine rotating structure — fan, compressor and turbine disks, spools, hubs and shafts— is life-limited: each part number carries a hard cycle limit published in the engine's Airworthiness Limitations Section. Unlike blades, vanes and seals, which are on-condition and repairable, an LLP is retired at its limit regardless of condition.

That makes cycles remaining, not condition, the value of a used LLP — and makes complete back-to-birth trace records the difference between a saleable disk and scrap. It is why engine teardowns are underwritten on the LLP stack rather than on parts count.

What we do not have:we carry no per-part-number cycle limits and no remaining-life data. Those live in OEM Airworthiness Limitations Sections and in each unit's own trace file — neither is public, and neither can be inferred from registry, SDR or PMA data. Our life-limit tagging covers date- and shelf-controlled classes (oxygen, fire bottles, slides and rafts, batteries, pyrotechnics, tires, de-ice boots, fuel bladders, pressure vessels), not engine LLPs. Always price an LLP off its trace records.

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
3031951	STATOR VANE	—	DHC-6 Twin Otter	72	unknown	OEM
3031T37P09 5W	turnbuckle body	ge engine services dist llc	—	72	Engine Accessories	OEM
3031T45G01 5W	bearing	ge engine services dist llc	—	72	Engine Accessories	OEM
3031T52P01 5W	keeper	ge engine services dist llc	—	72	Engine Accessories	OEM
3031T64P01 5W	piston valve	ge engine services dist llc	—	72	Engine Accessories	OEM
3031T86P01 5W	shroud	ge engine services dist llc	—	72	Engine Accessories	OEM
3031T99P01 5W	plate	ge engine services dist llc	—	72	Engine Accessories	OEM
3032098	CSU	—	PA-28 Cherokee PA-28-140	72	unknown	OEM
3032145	IMPELLER VANE	—	—	72	Engine Accessories
3032151	VANE	PWA	C208B Grand Caravan Bell 212	72	Engine Accessories	OEM
3032208	BEARING	—	King Air 200 1900D+1	72	unknown	OEM
3032208TA	Bearing, Roller, Flanged Supplement 115	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032255CL1	Weight Balance Compressor	—	—	72	Engine Accessories	OEM
3032255CL1CP	Weight Balance Compressor	Core Parts LLC	—	72	Engine Accessories	PMA
3032255CL2	Weight Balance Compressor	—	—	72	Engine Accessories	OEM
3032255CL2CP	Weight Balance Compressor	Core Parts LLC	—	72	Engine Accessories	PMA
3032255CL3	Weight Balance Compressor	—	—	72	Engine Accessories	OEM
3032255CL3CP	Weight Balance Compressor	Core Parts LLC	—	72	Engine Accessories	PMA
3032255CL4	Weight Balance Compressor	—	—	72	Engine Accessories	OEM
3032255CL4CP	Weight Balance Compressor	Core Parts LLC	—	72	Engine Accessories	PMA
3032255CL5	Weight Balance Compressor	—	—	72	Engine Accessories	OEM
3032255CL5CP	Weight Balance Compressor	Core Parts LLC	—	72	Engine Accessories	PMA
3032267CL11	PLANETARY GEAR	—	—	72	unknown	OEM
3032363	BUSHING	—	—	72	unknown	OEM
3032451CL03	VANE	PWC	—	72	Engine Accessories	OEM
3032615	Bearing, Roller, Flanged Supplement 136	—	—	72	Engine Accessories	OEM
3032615	Bearing, Roller, Flanged Supplement 136	—	—	72	Engine Accessories	OEM
3032615TA	Bearing, Roller, Flanged Supplement 136	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032623	Bearing, Ball Supplement 147	—	—	72	Engine Accessories	OEM
3032623	Bearing, Ball Supplement 147	—	—	72	Engine Accessories	OEM
3032623TA	Bearing, Ball Supplement 147	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032627	Bearing - Roller, Flanged Supplement 169	—	—	72	Engine Accessories	OEM
3032627	Bearing - Roller, Flanged Supplement 169	—	—	72	Engine Accessories	OEM
3032627TA	Bearing - Roller, Flanged Supplement 169	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032633	Bearing, Ball, Annular, Duplex Supplement 145	—	—	72	Engine Accessories	OEM
3032633	Bearing, Ball, Annular, Duplex Supplement 145	—	—	72	Engine Accessories	OEM
3032633TA	Bearing, Ball, Annular, Duplex Supplement 145	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032640	Bearing, Option (IC) (No. 15 Bearing) Supplement 170	—	—	72	Engine Accessories	OEM
3032640	Bearing, Option (IC) (No. 15 Bearing) Supplement 170	—	—	72	Engine Accessories	OEM
3032640TA	Bearing, Option (IC) (No. 15 Bearing) Supplement 170	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032642	Bearing, Roller, Flanged Supplement 179	—	—	72	Engine Accessories	OEM
3032642	Bearing, Roller, Flanged Supplement 179	—	—	72	Engine Accessories	OEM
3032642TA	Bearing, Roller, Flanged Supplement 179	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032647	Bearing, Roller, Flanged Supplement 139	—	—	72	Engine Accessories	OEM
3032647	Bearing, Roller, Flanged Supplement 139	—	—	72	Engine Accessories	OEM
3032647TA	Bearing, Roller, Flanged Supplement 139	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032648	Bearing, Roller, Flanged Supplement 120	—	—	72	Engine Accessories	OEM
3032648	Bearing, Roller, Flanged Supplement 120	—	—	72	Engine Accessories	OEM
3032648TA	Bearing, Roller, Flanged Supplement 120	Extex Engineered Products Inc	—	72	Engine Accessories	PMA
3032649	BEARING	—	1900D	72	unknown	OEM