21-28 - Airworthiness Certification of U.S.-Produced Aircraft and Engine Kits Assembled Outside the United States
- Date Issued
- June 20, 1990
- Responsible Office
- AIR-220, Aircraft Certification Service - Production & Airworthiness Certification Division
- Provides information and guidance concerning airworthiness certification requirements for aircraft or aircraft engines, assembled from kits by aircraft or aircraft engine manufacturers located in other countries.
- AC21-28.pdf (PDF, 515 KB)