RING GEAR ASSY (P/N 74977) - As Removed

The 74977 ring gear assembly transfers starter motor torque to the aircraft engine crankshaft during engine start. This steel gear meshes with the starter pinion and mounts to the flywheel per engine maintenance specifications. Found on piston-engine aircraft, the ring gear enables reliable starter engagement for cold starts and restarts.

Verify part compatibility against your aircraft's Illustrated Parts Catalog before installation and follow FAA-approved procedures for mounting and torque specifications.

What is the RING GEAR ASSY (P/N 74977)?

The 74977 ring gear assembly transfers starter motor torque to the aircraft engine crankshaft during engine start. This steel gear meshes with the starter pinion and mounts to the flywheel per engine maintenance specifications.

What aircraft models does the 74977 fit?

Part number 74977 is listed in multiple aircraft Illustrated Parts Catalogs. Always verify the RING GEAR ASSY against your specific aircraft model's IPC and Type Certificate Data Sheet before ordering. Currently available in: As Removed.

Does the 74977 include an 8130-3 tag and maintenance records?

Documentation varies by condition. Overhauled and repaired landing gear components include 8130-3 airworthiness tags. New surplus includes manufacturer documentation. Contact us for trace documentation on the specific condition you need.

Do you offer volume pricing for fleet orders of the 74977?

Yes, we offer quantity discounts for fleet maintenance orders. Submit a Request for Quote (RFQ) specifying your required quantity, or call (904) 998-9101 to discuss fleet pricing for the RING GEAR ASSY.