ATA 63 — Main Rotor Drive(s)

4,983 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
SB47-620-801-001	Coupling, Engine to Transmission	Scott's-Bell 47 Inc.	—	63	Engine Accessories	PMA
SB47-620-801-003	Coupling, Engine to Transmission	Scott's-Bell 47 Inc.	—	63	Engine Accessories	PMA
SB47-620-954-001	Strainer, Oil Jet, Bevel Gear Transmission Assembly of	Scott's-Bell 47 Inc.	—	63	Engine Accessories	PMA
SB47-620-954-003	Strainer, Oil Jet, Bevel Gear Transmission Assembly of	Scott's-Bell 47 Inc.	—	63	Engine Accessories	PMA
SB47-620-954-005	Strainer, Oil Jet, Bevel Gear Transmission Assembly of	Scott's-Bell 47 Inc.	—	63	Engine Accessories	PMA
SB47-620-961-001	Spider set, planetary, lower transmission	Scott's-Bell 47 Inc.	—	63	Powerplant / Nacelle	PMA
SB47-620-961-007	Spider set, planetary, lower transmission	Scott's-Bell 47 Inc.	—	63	Powerplant / Nacelle	PMA
SB47-620-964-001	Roller, Cylindrical, Lower Planetary Bearing, Transmission	Scott's-Bell 47 Inc.	Bell 47	63	Consumables / Hardware	PMA
SB47-620-968-001	Cushion - Free Wheeling Spring, Transmission	Scott's-Bell 47 Inc.	—	63	Powerplant / Nacelle	PMA
SB47-620-981-001	Bearing, Planetary Pinion Transmission Shaft	Scott's-Bell 47 Inc.	—	63	Engine Accessories	PMA
SB47-620-981-003	Bearing, Planetary Pinion Transmission Shaft	Scott's-Bell 47 Inc.	—	63	Engine Accessories	PMA
SB7003102	BEARING	—	S-76	63	unknown
SB8209103	SEAL	—	S-76	63	Consumables / Hardware	OEM
SB8404-103	split mast seal	sikorsky aircraft corporation	—	63	Consumables / Hardware	OEM
SB8504-101	seal input module drive shaft	sikorsky aircraft corporation	—	63	Consumables / Hardware	OEM
Sikorsky 6135-342-139	Bearing Sleeve	—	—	63	unknown	OEM
Sikorsky 6135-342-141	Bearing Sleeve	—	—	63	unknown	OEM
Sikorsky 6435-20314-101	Isolator	—	—	63	unknown	OEM
Sikorsky 76200-01901-102	Flex Drive Assembly, Standard	—	—	63	unknown	OEM
Sikorsky 76363-09103-101	Rotor Brake Assembly	—	—	63	Powerplant / Nacelle	OEM
Sikorsky 76363-09103-101	Rotor Brake Assembly	—	—	63	Powerplant / Nacelle	OEM
Sikorsky Aircraft 76351-09081-102	Pump, lube and scavenge	—	—	63	Engine Accessories	OEM
Sikorsky Aircraft Co. Part Number 92351-15800-104	Lube Pump MGB	—	S-92A	63	unknown	OEM
Sikorsky Aircraft Co. Part Number 92351-15800-104	Lube Pump MGB	—	S-92A	63	unknown	OEM
Sikorsky Aircraft Division 76363-09101-105	Brake, Helicopter Rotor	—	—	63	Powerplant / Nacelle	OEM
Sikorsky Aircraft Division 76363-09101-107	Brake, Helicopter Rotor	—	—	63	Powerplant / Nacelle	OEM
Sikorsky Aircraft Division 76363-09101-108	Brake, Helicopter Rotor	—	—	63	Powerplant / Nacelle	OEM
Sikorsky Aircraft Division S6135-61044-002	Disk, Unplated Gear Tooth	—	—	63	unknown	OEM
Sikorsky Aircraft P/N SB7004-103	Elastomeric Bearing, Bonded	—	—	63	unknown	OEM
Sikorsky Aircraft P/N SB7004-103	Elastomeric Bearing, Bonded	—	—	63	unknown	OEM
Sikorsky P/Ns 76363-09103-101	Rotor Brake Assembly	—	—	63	Electromechanical	OEM
Sikorsky P/Ns 76363-09103-101	Rotor Brake Assembly	—	—	63	Electromechanical	OEM
Sikorsky Part Number: 92351-15800-103 Rev. J dated 2/1/06	Lube & Scavenge Pump	—	—	63	Engine Accessories	OEM
Sikorsky Part Number: 92351-15800-103 Rev. J dated 2/1/06	Lube & Scavenge Pump	—	—	63	Engine Accessories	OEM
Sikorsky R1610-26075-7	Screen Assembly	—	—	63	unknown	OEM
Sikorsky S6130-62014-1	Shaft Assembly	—	—	63	unknown	OEM
Sikorsky S6130-62036-1	Worm Gear	—	—	63	unknown	OEM
Sikorsky S6130-80076-001	Tube Assembly	—	—	63	Consumables / Hardware	OEM
Sikorsky S6130-80513-1	Manifold	—	—	63	unknown	OEM
Sikorsky S6132-61027-1	Shaft Assembly	—	—	63	unknown	OEM
Sikorsky S6135-20033-0	Shim	—	—	63	Consumables / Hardware	OEM
Sikorsky S6135-20070-2	Gear	—	—	63	unknown	OEM
Sikorsky S6135-20070-3	Gear	—	—	63	unknown	OEM
Sikorsky S6135-20108-0	Coupling	—	—	63	Consumables / Hardware	OEM
Sikorsky S6135-20108-101	Coupling	—	—	63	Consumables / Hardware	OEM
Sikorsky S6135-20181-2	Gear	—	—	63	unknown	OEM
Sikorsky S6135-20185-0	Gear	—	—	63	unknown	OEM
Sikorsky S6135-20272-0	Breather Assembly	—	—	63	unknown	OEM
Sikorsky S6135-20407-216	Tube Assembly	—	—	63	Consumables / Hardware	OEM
Sikorsky S6135-20607-3	Gear, Spur	—	—	63	unknown	OEM