14 C.F.R. § 375.23 Maximum allowable weights.
Title 14 - Aeronautics and Space
Foreign civil aircraft that are permitted to navigate in the United States on the basis of foreign airworthiness certificates must conform to the limitations on maximum certificated weights prescribed or authorized for the particular variation of the aircraft type, and for the particular category of use, by the country of manufacture of the aircraft type involved.
Title 14: Aeronautics and Space
PART 375—NAVIGATION OF FOREIGN CIVIL AIRCRAFT WITHIN THE UNITED STATES
Subpart C—Rules Generally Applicable
§ 375.23 Maximum allowable weights.