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
S6135-66612-006	gear shaft	sikorsky aircraft corporation	—	63	Electromechanical	OEM
S6135-66631-000	liner	sikorsky aircraft corporation	—	63	Consumables / Hardware	OEM
S6135-66632-000	liner	sikorsky aircraft corporation	—	63	Consumables / Hardware	OEM
S6135-66646-000	bushing	sikorsky aircraft corporation	—	63	Consumables / Hardware	OEM
S6135-66663-000	plug	sikorsky aircraft corporation	—	63	Consumables / Hardware	OEM
S6135-66668-001	spacer	sikorsky aircraft corporation	—	63	Consumables / Hardware	OEM
S6135-6670602	Shaft Assembly	—	—	63	unknown	OEM
S6135200117	HOUSING	—	S-61	63	unknown	OEM
S613520060103	COVER	SKRSKY	S-61	63	Structures	OEM
S6135200605	REAR COVER	—	S-61	63	Structures	OEM
S6135200606	REAR COVER	—	S-61	63	Structures	OEM
S613520148006	SHAFT	SKRSKY	S-61	63	Structures	OEM
S613520428	LINE	—	S-61	63	unknown	OEM
S613520600039	GEARBOX	—	S-61	63	Structures	OEM
S613520600046	TRANSMISSION	SKRSKY	S-61	63	Engine Accessories	OEM
S6135206073	SPUR GEAR	—	S-61	63	Electromechanical	OEM
S613520611042	FREEWHEEL UNIT	—	S-61	63	Structures	OEM
S613520614007	CAMSHAFT	—	S-61	63	Structures	OEM
S6135206147	CAMSHAFT	—	S-61	63	Engine Accessories
S613520670	GEARBOX	—	S-61	63	Engine Accessories	OEM
S613520670042	HOUSING	—	S-61	63	unknown	OEM
S613520670043	HOUSING	—	S-61	63	unknown	OEM
S613522017003	RING GEAR	—	S-61	63	Engine Accessories	OEM
S6135220173	RING GEAR TOOTH	—	S-61	63	Engine Accessories
S613522032001	GEARBOX	—	S-61	63	Structures	OEM
S613523053102	GEAR	—	S-61	63	unknown
S6135296191	SLEEVE	—	S-61	63	unknown	OEM
S613564038002	BLOWER	—	S-61	63	Electromechanical	OEM
S613564053-105	Housing	—	—	63	unknown	OEM
S613566300	GEARBOX	—	S-61	63	Engine Accessories	OEM
S6137-23037-008	jet assy	sikorsky aircraft corporation	—	63	Powerplant / Nacelle	OEM
S6137-23037-8	Jet Assembly	—	—	63	unknown	OEM
S6137-23051-002	gear spur input	sikorsky aircraft corporation	—	63	Electromechanical	OEM
S6137-23055-001	sun gear	sikorsky aircraft corporation	—	63	Engine Accessories	OEM
S6137-23055-1	Sun Gear, Main Gear Box	—	—	63	unknown	OEM
S6137-23056-002	gear	sikorsky aircraft corporation	—	63	Powerplant / Nacelle	OEM
S6137-23056-2	Gear	—	—	63	unknown	OEM
S6137-23076-1	Gear	—	—	63	unknown	OEM
S6137-64325-001	inner hsg	sikorsky aircraft corporation	—	63	Powerplant / Nacelle	OEM
S6137-64325-1	Housing, Inner	—	—	63	unknown	OEM
S6137-64325-102	housing	sikorsky aircraft corporation	—	63	Structures	OEM
S6137-64367-2	Spacer	—	—	63	Consumables / Hardware	OEM
S6137-64372-1	Disc Assembly	—	—	63	unknown	OEM
S6137-66708-002	retainer	sikorsky aircraft corporation	—	63	Consumables / Hardware	OEM
S6137230096	COVER	SKRSKY	S-61	63	Structures	OEM
S613723050001	GEAR	—	S-61	63	unknown
S613723053102	BEVEL GEAR	—	S-61	63	Structures	OEM
S613723054001	BEVEL GEAR	—	S-61	63	Electromechanical	OEM
S63203A03RB3545	ball bearing	airbus helicopters inc american eurocopter	—	63	Structures	OEM
S76B-C-MGB-KIT	mgb kit	sikorsky aircraft corporation	—	63	Electromechanical	OEM