Form 337 2025

See details

4.8 out of 5

175 votes

The document outlines the requirements and procedures for submitting FAA Form 337, which is used to report major repairs and alterations to aircraft. It emphasizes compliance with the Paperwork Reduction Act, mandates the display of a valid OMB Control Number, and provides instructions for completing the form. The document also details the necessary information regarding aircraft identification, owner details, type of work performed, conformity statements, and approval for return to service.

Here's how it works

01. Edit your 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 via email, link, or fax. You can also download it, export it or print it out.

How to use or fill out 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 it in the editor.
Begin by entering the Aircraft Nationality and Registration Mark along with the Serial Number, Make, Model, and Series in the designated fields.
Next, fill in the Owner's Name and Address as shown on the registration certificate. Ensure all details are accurate for compliance.
In Section 4, specify whether the work performed was a Repair or Alteration and provide Unit Identification details including Make, Model, and Serial Number.
Complete the Conformity Statement by entering the Agency's Name, Address, Kind of Agency, and Certificate Number. Sign and date this section to certify accuracy.
For Approval for Return to Service, indicate whether the unit is Approved or Rejected and provide necessary signatures from authorized individuals.
Finally, describe the work accomplished in Section 8. If additional space is needed, attach extra sheets clearly labeled with aircraft nationality and registration mark.

Start using our platform today to streamline your form completion process for free!

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.

How can I sign my faa 337 online?

Sign in to your DocHub account and add your faa 337 to our editor using one of its upload methods - from your device, cloud storage, secure URL, or your DocHub folders if you have already managed your document before. Open our editor, click the Sign key in the top toolbar, and decide on your signing method. You can upload an image of your handwritten signature, draw it, type in your name, or utilize a QR code instead.

How do you fill out faa 337 form on Android?

It is a no-brainer on a computer or via a mobile phone to fill out a faa 337 form with DocHub. All you need to do is open any installed browser on your smartphone and proceed to the DocHub site. Once authenticated, add your file and open it in editing mode. Use our toolbar to make your edits and save adjustments. Optionally, keep your document in your files or send it to a recipient on the spot.

What is the purpose of FAA 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.

Does an STC require a form 337?

Any STC is, by definition, a major alteration and also requires a 337 form.

Do I need a 337 for a TSO part?

In many cases, installing a TSO part \u201cmay\u201d require a Form 337 because installing it would be considered a major alteration of the original type design. For example, installing a new TSO glass cockpit in a Cessna 172 would require a Form 337.\u201d

faa form 337 pdf

Form 337 example Form 337 pdf DA form 337 Form 337 instructions Faa form 337 Form 337 and STC FAA Form 337 fillable When is a FAA Form 337 required

Related forms

be ready to get more

Complete this form in 5 minutes or less

Get form

Can a A&P fill out 337?

If the alteration is minor, the approval can be done by any licensed A&P mechanic. However, if the alteration is deemed to be major, it requires a mechanic with an Inspection Authorization (IA), in order to sign the approval block on the 337 form and submit it to the FAA.

Who fills out block 3 of a 337 form?

What is FAA form 337 Field approval?

The Aviation Safety Inspector can sign Block 3 of FAA Form 337 to approve the repair or alteration, or. Additional data from the applicant is needed if the original data package is found to be inadequate, or. The data needs Aircraft Certification Office review in light of its complexity or adequacy, or.

What is meant by Field approval?

A field approval is one of the means used by the FAA to approve technical data used to accomplish a major repair or major alteration.

What is an aviation 337?

Form FAA 337 - MAJOR REPAIR & ALTERATION (Airframe, Powerplant, Propeller, or Appliance)

Form 337 2025

Here's how it works

How to use or fill out form 337 with our platform

Complete this form in 5 minutes or less

Got questions?

How can I sign my faa 337 online?

How do you fill out faa 337 form on Android?

What is the purpose of FAA form 337?

Does an STC require a form 337?

Do I need a 337 for a TSO part?

Complete this form in 5 minutes or less

People also ask

Can a A&P fill out 337?

Who fills out block 3 of a 337 form?

What is FAA form 337 Field approval?

What is meant by Field approval?

What is an aviation 337?

337 form

Try more PDF tools