[Code of Federal Regulations] [Title 14, Volume 4] [Revised as of January 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR375.21] [Page 386] TITLE 14--AERONAUTICS AND SPACE CHAPTER II--OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) PART 375--NAVIGATION OF FOREIGN CIVIL AIRCRAFT WITHIN THE UNITED STATES--Table of Contents Subpart C--Rules Generally Applicable Sec. 375.21 Airmen. Members of the flight crew of a foreign civil aircraft shall have in their personal possession valid airman certificates or licenses authorizing them to perform their assigned functions in the aircraft and for the operation involved issued or rendered valid by the country of registry of the aircraft or by the United States. No such flight crew members shall perform any flight duty within the United States that they are not currently authorized to perform in the country issuing or validating the certificate.