§ 61.3   Requirement for certificates, ratings, and authorizations.

(b) Required pilot certificate for operating a foreign-registered aircraft. A person may not act as pilot in command or in any other capacity as a required pilot flight crewmember of a civil aircraft of foreign registry within the United States, unless that person's pilot certificate:

(1) Is valid and in that person's physical possession, or readily accessible in the aircraft when exercising the privileges of that pilot certificate; and

(2) Has been issued under this part, or has been issued or validated by the country in which the aircraft is registered.

See also 61.75 Foreign Pilots seeking US Pilot Privileges

and

61.77 Non US Citizens Flying US Registered Aircraft

[Doc. No. 25910, 62 FR 16298, Apr. 4, 1997; Amdt. 61–103, 62 FR 40894, July 30, 1997; Amdt. 61–111, 67 FR 65861, Oct. 28, 2002; Amdt. 61–110, 69 FR 44864, July 27, 2004]