ATA 63 — Main Rotor Drive(s)

6,080 parts classified under this chapter

Reliability rollup

100%Median scrap propensity

1,494 parts · 4,374 SDR reports

From FAA Service Difficulty Reports

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
369D535051	CLUTCH	—	MD 500	63	Electromechanical	OEM
369F5100503	TRANSMISSION	—	MD 500	63	Electromechanical	OEM
369F51271	GEAR	DOUG	MD 500	63	Flight Controls	OEM
369F51491	BEARING	—	MD 500	63	unknown	OEM
369F51501	COVER	—	MD 500	63	unknown	OEM
369F54501	HOUSING	—	MD 500	63	unknown
369F54531	BEARING RACE	—	MD 500	63	Consumables / Hardware	OEM
369F5456L	SPRAG ASSY	DOUG	MD 500	63	Engine Accessories	OEM
369F55101	DRIVE SHAFT	—	MD 500	63	Electromechanical	OEM
369H1237	Journal Bearing	—	—	63	—	OEM
369H1237	Journal Bearing	—	—	63	—	OEM
369H2549	Bearing Retainer - Center Beam Fitting	—	MD 500	63	—	OEM
369H2549	Bearing Retainer - Center Beam Fitting	—	MD 500	63	—	OEM
369H5105	BOLT	—	MD 500	63	Consumables / Hardware	OEM
369H56555	BEARING	—	MD 500	63	unknown	OEM
369H5656	PULLEY ASSY	—	MD 500	63	Flight Controls	OEM
369H5660	COUPLING	—	MD 500	63	Electromechanical	OEM
369T1237	Journal Bearing	TRANSPORT DYNAMICS CORPORATION	MD 500	63	Engine Accessories	PMA
369X25180-3	Seal, Oil - Input Shaft	Aerometals	MD 500	63	Engine Accessories	PMA
369X25181-7	Seal, Oil - Input Shaft	Aerometals	MD 500	63	Engine Accessories	PMA
369X7356	Drive Gear	Aerometals	MD 500	63	Electromechanical	PMA
369X7365	Gear Assy	Aerometals	MD 500	63	Electromechanical	PMA
370077	Bearing	—	—	63	—	OEM
370077AA	Bearing	Able Aerospace Services, Inc.	—	63	Flight Controls	PMA
370211	Retaining Ring	—	—	63	—	OEM
370211	Retaining Ring	—	—	63	—	OEM
370211AA	Retaining Ring	Able Aerospace Services, Inc.	—	63	Flight Controls	PMA
370217	Machined Flat Head Screw	—	—	63	—	OEM
370217	Machined Flat Head Screw	—	—	63	—	OEM
370217AA	Machined Flat Head Screw	Able Aerospace Services, Inc.	—	63	Flight Controls	PMA
370474	Spiral Wound Gasket	—	—	63	—	OEM
370474	Spiral Wound Gasket	—	—	63	—	OEM
370474AA	Spiral Wound Gasket	Able Aerospace Services, Inc.	—	63	Flight Controls	PMA
370885	Ring, Air Seal	—	—	63	—	OEM
370885	Ring, Air Seal	—	—	63	—	OEM
370885AA	Ring, Air Seal	Able Aerospace Services, Inc.	—	63	Flight Controls	PMA
370886	Ring - Air Sealing	—	—	63	—	OEM
370886	Ring - Air Sealing	—	—	63	—	OEM
370886AA	Ring - Air Sealing	Able Aerospace Services, Inc.	—	63	Flight Controls	PMA
381860710012	BYPASS INDICATOR	—	MD-90	63	Instruments	OEM
3860166-1	Spur Gear, High Speed Pinion	—	757 767	63	—	OEM
3860166-1	Spur Gear, High Speed Pinion	—	757 767	63	—	OEM
3860166AA-1	Spur Gear, High Speed Pinion	Able Aerospace Services, Inc.	757 767	63	Flight Controls	PMA
3860168-2	Starter, Gear	—	757-200 767-200+4	63	—	OEM
3860168-2	Starter, Gear	—	757-200 767-200+4	63	—	OEM
3860169-5	Gear-Spur Fan	—	757 767	63	—	OEM
3860169-5	Gear-Spur Fan	—	757 767	63	—	OEM
3860169AA-5	Gear-Spur Fan	Able Aerospace Services, Inc.	757 767	63	Flight Controls	PMA
3860180-6	Gearshaft Assembly -Spur	—	757-200 757-300+3	63	—	OEM
3860180-6	Gearshaft Assembly -Spur	—	757-200 757-300+3	63	—	OEM