Suspected Unapproved Parts (SUP) Program

The FAA is committed to discovering and removing Suspected Unapproved Parts (SUP). The agency has extensive guidance on how suppliers and maintenance facilities can prevent them from being installed. The FAA thoroughly investigates every SUP report. If we determine a part is unapproved, we notify aircraft owners, operators, manufacturers, maintenance organizations, parts suppliers, and distributors.

View FAA Unapproved Parts Notifications 

Subscribe to Unapproved Parts Notifications via email.

You may submit an SUP report to the FAA Hotline. To submit a report:

Parts Manufacturer Approval (PMA) List of PMA Parts

Related Policy and Guidance

  • Detecting and Reporting Suspected Unapproved Parts, AC 21-29
  • Eligibility and Evaluation of U.S. Military Surplus Flight Critical Aircraft Parts, Engines, and Propellers, AC 20-142
  • Eligibility, Quality, and Identification of Approved Aeronautical Replacement Parts, AC 20-62
  • Voluntary Disclosure Reporting Program, AC 00-58

Standard Parts Information


Last updated: Thursday, December 14, 2023