Have you finished filling out Form 337 and are ready to mail it, but have no idea where it goes? Here’s the Address: Federal Aviation Administration Aircraft Registration Branch Post Office Box 25724 Oklahoma City, OK 73125 Click the link below for FAA’s info Appendix B (c)(2) & (3): https://www.federalregister.gov/documents/2007/09/20/E7-18584/recording-of-major-repairs-and-major-alterations ————- More questions?  Need help?  … Continue reading Where to Mail Form 337?