Sec. 21.500 - Approval of engines and
Each holder or licensee of a U.S. type certificate for an aircraft engine or propeller manufactured in a foreign country with which the United States has an agreement for the acceptance of those products for export and import, shall furnish with each such aircraft engine or propeller imported into this country, a certificate of airworthiness for export issued by the country of manufacture certifying that the individual aircraft engine or propeller --
(a) Conforms to its U.S. type certificate and is in condition for safe operation; and
(b) Has been subjected by the manufacturer to a final operational check.
[Amdt. 21-25, 34 FR 14068, Sept. 5,