--- title: Creating Form 337s description: How to create Form 337s --- [Skip to content](https://help.airworthy.com/creating-form-337s#main-content) English Show submenu for translations ![TBX](https://help.airworthy.com/hs-fs/hubfs/TBX-Logo-2024-midnightBlue.png?width=100&height=21&name=TBX-Logo-2024-midnightBlue.png) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](mailto:support@airworthy.com) [Contact us](mailto:support@airworthy.com) How can we help you? - There are no suggestions because the search field is empty. 1. [TBX Knowledge Base](https://help.airworthy.com/?hsLang=en) 2. [Logbook Records & Forms](https://help.airworthy.com/logbook-records-forms?hsLang=en) 3. [Form 337](https://help.airworthy.com/logbook-records-forms?hsLang=en#form-337) June 2, 2025 # Creating Form 337s ## How to fill out, save, and download 337s Users can fill out FAA Form 337 - Major Repair and Alteration (Airframe, Powerplant, Propeller, or Appliance) directly within the TBX platform.  The best way to create a 377 is to navigate to an aircraft profile and then scroll down to the Form 337 section and select the **"Actions"** button, then select the "**+ New Form 337**" option:![](https://help.airworthy.com/hs-fs/hubfs/image-png-Jun-02-2025-06-17-18-4648-PM.png?width=670&height=152&name=image-png-Jun-02-2025-06-17-18-4648-PM.png) This will bring up the editor. Section 1 & 2 will automatically populate based on the Aircraft Profile information. Section 4 select the type of repair or alteration performed, i.e. "Airframe Alteration": ![](https://help.airworthy.com/hs-fs/hubfs/image-png-Jun-02-2025-06-35-14-5194-PM.png?width=937&height=518&name=image-png-Jun-02-2025-06-35-14-5194-PM.png) Next select Conformity Statement "Kind of Agency", i.e. Certificated Mechanic and put Cert #: ![](https://help.airworthy.com/hs-fs/hubfs/image-png-Jun-02-2025-06-34-42-4844-PM.png?width=938&height=645&name=image-png-Jun-02-2025-06-34-42-4844-PM.png) Next fill out Approval for Return to Service & Cert #: ![](https://help.airworthy.com/hs-fs/hubfs/image-png-Jun-02-2025-06-33-44-6453-PM.png?width=938&height=502&name=image-png-Jun-02-2025-06-33-44-6453-PM.png) Fill in the description of the work accomplished and hit **Save Changes**. ![](https://help.airworthy.com/hs-fs/hubfs/image-png-Jun-02-2025-06-20-02-5799-PM.png?width=941&height=254&name=image-png-Jun-02-2025-06-20-02-5799-PM.png) Note the "**+ ICA Checklist**" button to fill out the appropriate ICA for the installation or repair (As required; ICA's can be added directly in that box or separately). If there isn't enough room for either the description of the work accomplished and/or the ICA checklist, you may check the box below for "additional sheets attached" to allow you to upload files to the 337. ![](https://help.airworthy.com/hs-fs/hubfs/image-png-Jun-02-2025-06-21-18-9485-PM.png?width=498&height=72&name=image-png-Jun-02-2025-06-21-18-9485-PM.png) This will pull up an area in the upper right to upload images. ![](https://help.airworthy.com/hs-fs/hubfs/image-png-Jun-02-2025-06-21-41-3032-PM.png?width=487&height=269&name=image-png-Jun-02-2025-06-21-41-3032-PM.png) Finally, remember to hit the "Save Changes" button in the upper right. 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