NONADDITION RULE.

SEC. 9309. NONADDITION RULE. (a) General Rule.—Except as provided in subsection (b) of this section, no person may operate a civil subsonic turbojet aircraft with a maximum weight of more than 75,000 pounds which is imported into the United States on or after the date of the enactment of this Act unless— (1) it complies with the Stage 3 noise levels, or (2) it was purchased by the person who imports the aircraft into the United States under a written contract executed before such date of enactment. (b) Exemption for Complying Modifications.—The Secretary may provide an exemption from the requirements of subsection (a) to permit a person to obtain modifications to an aircraft to meet the Stage 3 noise levels. (c) Limitation on Statutory Construction.—For the purposes of this section, an aircraft shall not be considered to have been imported into the United States if such aircraft— (1) on the date of the enactment of this Act, is owned— (A) by a corporation, trust, or partnership which is organized under the laws of the United States or any State (including the District of Columbia); (B) by an individual who is a citizen of the United States; or (C) by any entity which is owned or controlled by a corporation, trust, partnership, or individual described in this paragraph; and (2) enters into the United States not later than 6 months after the date of the expiration of a lease agreement (including any extensions thereof) between an owner described in paragraph (1) and a foreign air carrier.