14 C.F.R. § 45.31 Marking of export aircraft.
Title 14 - Aeronautics and Space
A person who manufactures an aircraft in the United States for delivery outside thereof may display on that aircraft any marks required by the State of registry of the aircraft. However, no person may operate an aircraft so marked within the United States, except for test and demonstration flights for a limited period of time, or while in necessary transit to the purchaser.
Title 14: Aeronautics and Space
PART 45—IDENTIFICATION AND REGISTRATION MARKING
Subpart C—Nationality and Registration Marks
§ 45.31 Marking of export aircraft.