AC 43.9-1G

Current

Instructions for Completion of FAA Form 337

Revised Dec 19, 2025

Revision: G
Issued: Nov 1, 2019
Office: AFS-300
Supersedes: 43.9-1F

Current 43.9-1G dated 2025-12-19, superseding 43.9-1F.

This AC provides instructions for completing Federal Aviation Administration (FAA) Form 337, Major Repair and Alteration (Airframe, Powerplant, Propeller, or Appliance).

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FAA status on the listing: Active. Document page