Faa form 337 2026

See details

4.8 out of 5

142 votes

The document outlines the requirements and procedures related to the Paperwork Reduction Act for information collection by the Federal Aviation Administration (FAA), specifically regarding major repairs and alterations of aircraft. It includes details on mandatory reporting, estimated response times, and legal implications for non-compliance. The document also provides a form (FAA Form 337) for reporting such repairs or alterations, including sections for aircraft identification, owner information, conformity statements, and approval for return to service.

Here's how it works

01. Edit your faa form 337 online

Type text, add images, blackout confidential details, add comments, highlights and more.

02. Sign it in a few clicks

Draw your signature, type it, upload its image, or use your mobile device as a signature pad.

03. Share your form with others

Send faa form 337 fillable via email, link, or fax. You can also download it, export it or print it out.

How to use or fill out FAA Form 337 with our platform

Ease of Setup

DocHub User Ratings on G2

Ease of Use

DocHub User Ratings on G2

Click ‘Get Form’ to open FAA Form 337 in the editor.
Begin by filling out the 'Aircraft' section. Enter the Nationality and Registration Mark, Serial Number, Make, Model, and Name as shown on the registration certificate. Ensure that the address details are accurate.
Proceed to the 'Owner' section. Input the owner's city, state, zip code, and country information.
In 'Unit Identification', specify whether it is a repair or alteration. Fill in details about the unit including make, model, and serial number as described in Item 1.
Complete the 'Conformity Statement' by providing your agency's name and address. Indicate your certification type and number.
Sign and date the form in the 'Approval for Return to Service' section after inspection. Ensure all required signatures are obtained.
Finally, describe the work accomplished in detail. If more space is needed, attach additional sheets clearly identifying them with aircraft nationality and registration mark.

Start using our platform today for free to streamline your FAA Form 337 completion!

See more faa form 337 versions

We've got more versions of the faa form 337 form. Select the right faa form 337 version from the list and start editing it straight away!

Versions	Form popularity	Fillable & printable
2006	4.8 Satisfied (142 Votes)
1988	4.4 Satisfied (101 Votes)

be ready to get more

Complete this form in 5 minutes or less

Get form

Got questions?

We have answers to the most popular questions from our customers. If you can't find an answer to your question, please contact us.

What is the difference between form 337 and stc?

(Airframe, Powerplant, Propeller, or Appliance) An STC is a more robust standard than a simple Form 337 that requires more engineering and proof that the intended modifications result in an airworthy plane.

When to execute FAA form 337?

FAA Form 337 will be executed in duplicate with one signed copy given to the aircraft owner and one copy forwarded to the FAA within 48 hours after the airframe, aircraft engine, propeller, or appliance is installed on an aircraft and approved for return to service.

Do you need a 337 for an STC?

STC Approval Once receiving certification, the MRO issues the return to service FAA Form 337. This document includes information about the STC development and notifies the FAA that the installation is complete.

What is FAA form 337 for?

Form FAA 337 - Major Repair and Alteration (Airframe, Powerplant, Propeller, or Appliance)

What type of data is required for completion of a FAA form 337?

Identify with nationality and registration mark and date work completed.) Weight and Ballance or operating limitation changes shall be entered in the appropriate aircraft record. An alteration must be compatible with all previous alterations to assure continued conformity with the applicable airworthiness requirements.

fillable faa form 337

FAA Form 337 example FAA Form 337 PDF Faa form 337 instructions Faa form 337 template FAA Form 337 word document FAA Form 337 fillable FAA Form 337 mailing address FAA Form 337 online submission

Related forms

be ready to get more

Complete this form in 5 minutes or less

Get form

What is a 337 field approval?

A field approval is the granting by an FAA airworthiness safety inspector of an FAA approval for a major repair or major alteration based on examination of data or physical inspection or testing. There are three kinds of field approvals for which the local FAA inspector can sign off in Block 3 of the FAA Form 337.

What is the FAA form 337 used for?

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. The following instructions apply to Items 1 through 8 of the form as illustrated in Appendix A, FAA Form 337.

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.

Faa form 337 2026

Here's how it works

How to use or fill out FAA Form 337 with our platform

See more faa form 337 versions

Complete this form in 5 minutes or less

Got questions?

What is the difference between form 337 and stc?

When to execute FAA form 337?

Do you need a 337 for an STC?

What is FAA form 337 for?

What type of data is required for completion of a FAA form 337?

Complete this form in 5 minutes or less

People also ask

What is a 337 field approval?

What is the FAA form 337 used for?

Can an AP fill out a 337?

337 form

Try more PDF tools