A person who is neither a United States citizen nor a resident alien is issued a certificate under this part (other than under § 63.23 or § 63.42 ) outside the United States only when the Administrator finds that the certificate is needed for the operation of a U.S.-registered civil aircraft.
14 C.F.R. §63.2
Secs. 313, 601, 602, Federal Aviation Act of 1958, as amended (49 U.S.C. 1354 , 1421 , and 1422 ) ; sec. 6(c), Department of Transportation Act (49 U.S.C. 1655(c) ) ; Title V, Independent Offices Appropriations Act of 1952 (31 U.S.C. 483(a) ) ; sec. 28, International Air Transportation Competition Act of 1979 (49 U.S.C. 1159(b)