Faa form 337 word document 2026

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The AVS-AFS Electronic FAA Form 337 User Guide provides comprehensive instructions for using the electronic version of FAA Form 337, which is used to document major repairs and alterations to aircraft. The guide includes details on system requirements, user account setup, digital certificate acquisition, form completion, and submission processes. It outlines the roles of various users such as Aviation Safety Inspectors (ASI), Designated Airworthiness Representatives (DAR), and Return to Service Agents (RTS) in the workflow. Additionally, it covers troubleshooting tips, attachment guidelines, and the importance of digital signatures for form validation.

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Click ‘Get Form’ to open the FAA Form 337 in our platform.
In Block 1, enter the Aircraft's Nationality and Registration Mark. Use the Search button to auto-fill details like Make, Model, and Serial Number.
In Block 2, verify and correct the Owner's Name and Address as shown on the registration certificate.
For Block 3, select the appropriate sign-off statement from the drop-down menu and add your Digital Signature.
Complete Blocks 4 through 8 by indicating whether the unit was repaired or altered, providing identification details, and describing the work accomplished.
Once all fields are filled out correctly, click ‘Complete’ to submit your form for approval. Ensure you have attached any necessary files if required.

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Can a 337 be completed electronically?

This form can be completed on paper or by using the electronic FAA Form 337. Information can be found online at or by contacting your local FSDO.

Can an AP fill out a 337?

If you replace the engine and wing vs repair them then no 337 needed. If repairing and depending how the repair is classified, an AP with Inspection Authorization (IA) is needed to sign the 337. As to applicant, it usually is the AP performing the repair and/or the IA who approves it for return to service.

Who fills out form 337?

The person who performs or supervises a major repair or major alteration must prepare FAA Form 337. The form is executed at least in duplicate and is used to record major repairs and major alterations made to an aircraft, airframe, powerplant, propeller, appliance, or a component part thereof.

How many copies of FAA Form 337 should be completed?

According to FAA regulations, a total of three copies of Form 337 are required for any major alterations or repairs: One copy must be submitted to the FAA to record the changes officially.

What is Form 337?

Give the original of the form to the aircraft owner or operator, and send the duplicate copy to the local FAA district office within 48 hours after the work is inspected. b. Non-previously Approved Date. The forms will be completed as instructed in this AC, leaving item 7, Approval for Return to Service, blank.

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How do you get a form 337?

FAA Form 337 is furnished free of charge and is available at all FAA Air Carrier (ACDO), General Aviation (GADO), Manufacturing Inspection (MIDO), and Flight Standards (FSDO) district offices, and at all International Field Offices (IFO).