To amend the Harmonized Tariff Schedule of the United States with respect to imports of civil aircraft.

Amends the Harmonized Tariff Schedule of the United States to require importers of civil aircraft that have been entered duty-free to: (1) maintain such supporting documentation as the Secretary of the Treasury may require; and (2) certify that such imported article is a civil aircraft, or has been imported for use in civil aircraft and will so be used. (Currently, importers must file a statement, along with the supporting documentation, with the appropriate customs officer stating that such article is and will be used as a civil aircraft, or that it has been imported for use in civil aircraft, and that it has been approved for such use by the Federal Aviation Administration.)