Form 337 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering the Aircraft Nationality and Registration Mark along with the Serial Number, Make, Model, and Series in the designated fields.
3. Next, provide the Owner's Name and Address as shown on the registration certificate. Ensure all details are accurate for compliance.
4. In Section 4, select the Type of work (Repair or Alteration) and fill in Unit Identification details including Make, Model, and Serial Number.
5. 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.
6. For Approval for Return to Service, indicate whether the unit is Approved or Rejected and provide necessary signatures from authorized individuals.
7. Finally, describe the Work Accomplished in detail. If more space is needed, attach additional sheets clearly identifying them with aircraft nationality and registration mark.

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