Advisory Circulars (AC)
  • 21-23, Airworthiness Certification of Civil Aircraft Engines, Propellers, and Related Products Imported into the United States
  • 21-2, Complying with the Requirements of Importing Countries or Jurisdictions When Exporting U.S. Products, Articles, or Parts
Orders
  • 8110.51, Acceptability of Previously Approved Certification Compliance Data from Foreign Sources
  • 8110.52, Type Validation and Post-Type Validation Procedures
  • 8110.4, Type Certification - All Changes Available
Guidance Additional Information