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
7635109008059	HOUSING	—	S-76	63	unknown	OEM
7635109011105	BEVEL GEAR	—	S-76	63	Structures	OEM
7635109011106	BEVEL GEAR	—	S-76	63	Electromechanical	OEM
7635109016041	HOUSING	—	S-76	63	unknown	OEM
7635109023101	LINER	—	S-76	63	Engine Accessories	OEM
7635109024041	INPUT HOUSING	—	S-76	63	Structures	OEM
7635109026107	ADAPTER SHAFT	—	S-76	63	Electromechanical	unknown
7635109028105	SHAFT	—	S-76	63	Structures	OEM
7635109032047	SPUR GEAR	—	S-76	63	Electromechanical	unknown
7635109041043	QUILL	SKRSKY	S-76	63	Structures	OEM
7635109042101	FLINGERS	—	S-76	63	Consumables / Hardware	unknown
7635109045102	GEAR	—	S-76 EC135	63	unknown
7635109058102	PINION GEAR	—	S-76	63	Structures	OEM
7635109081102	LUBE PUMP	—	S-76	63	Electromechanical	OEM
7635109082	CHIP DETECTOR	—	S-76	63	Instruments	unknown
7635109082105	CHIP DETECTOR	—	S-76	63	Instruments
7635109083103	FILTER	—	S-76	63	unknown	OEM
7635109105068	OIL JET	—	S-76	63	Engine Accessories	OEM
7635109132102	PINION GEAR	—	S-76	63	Electromechanical	OEM
7635109150103	TUBE	—	S-76 EC135	63	unknown
7635109500043	TRANSMISSION	—	S-76	63	Electromechanical	OEM
7635109500044	TRANSMISSION	SKRSKY	S-76	63	Structures	OEM
7635109600	GEARBOX	—	S-76	63	Structures	OEM
7635109600044	TRANSMISSION	—	S-76	63	Structures	OEM
7635109600049	TRANSMISSION	SKRSKY	S-76	63	Engine Accessories	OEM
763510960044	OIL SYSTEM	—	S-76	63	Engine Accessories	OEM
7635109626	SHAFT	—	S-76	63	Structures	OEM
76357-05011-101	pinion	sikorsky aircraft corporation	—	63	Powerplant / Nacelle	OEM
76357-05011-103	breather	sikorsky aircraft corporation	S-76	63	Consumables / Hardware	OEM
76357-05014-042	center hsg assy	sikorsky aircraft corporation	—	63	Powerplant / Nacelle	OEM
76357-05611-041	gear assy	sikorsky aircraft corporation	S-76	63	Engine Accessories	OEM
76357-05611-101	input gear	sikorsky aircraft corporation	—	63	Electromechanical	OEM
76358-05102-042	housing and lin	sikorsky aircraft corporation	—	63	Powerplant / Nacelle	OEM
76358-05104-101	pinion	sikorsky aircraft corporation	S-76	63	Powerplant / Nacelle	OEM
76358-05109-045	housing assy	sikorsky aircraft corporation	S-76	63	Engine Accessories	OEM
76358-05112-041	housing assy	sikorsky aircraft corporation	S-76	63	Structures	OEM
76358-05113-101	gear	sikorsky aircraft corporation	—	63	Powerplant / Nacelle	OEM
76358-05124-042	shaft assy	sikorsky aircraft corporation	S-76	63	Powerplant / Nacelle	OEM
76358-05604-101	pinion input	sikorsky aircraft corporation	S-76	63	Electromechanical	OEM
76358-05613-101	gear bevel	sikorsky aircraft corporation	—	63	Electromechanical	OEM
76361-04003-041	stub shaft	sikorsky aircraft corporation	S-76	63	Engine Accessories	OEM
76361-04604-041	shaft assy	sikorsky aircraft corporation	—	63	Powerplant / Nacelle	OEM
7636104008103	DISC PACK	—	S-76 EC135	63	Structures	OEM
7636109103104	OUTPUT FLANGE	—	S-76	63	Structures	OEM
76362-09203-102	Cooler, Oil-Main Gear Box	—	S-76 S-76D	63	unknown	OEM
76362-09203-102	Cooler, Oil-Main Gear Box	—	S-76D	63	unknown	OEM
76362-09204-101	screen	sikorsky aircraft corporation	S-76	63	Consumables / Hardware	OEM
7636209202103	BLOWER	—	S-76	63	Electromechanical	OEM
76363-09102-102	Rotor Brake Assembly	—	—	63	Electromechanical	OEM
76363-09102-102	Rotor Brake Assembly	—	—	63	Electromechanical	OEM