(a)
(1) Flights of an aircraft for the purpose of export to a foreign country, including any flights essential to demonstrate the integrity of an aircraft prior to its flight to a point outside the United States.
(2) Flights to a base where repairs, alterations or maintenance are to be performed, or to a point of storage, and flights for the purpose of returning an aircraft to service.
(3) Official visits by representatives of foreign governments.
(4) Other flights the Secretary determines, after consultation with the Administrator, to be for short durations at infrequent intervals. A request for such a determination shall be made before the flight takes place.
(b)
(c)
(1) Adverse economic impact on the manufacturer.
(2) Adverse economic impact on the aircraft and airline industries at large.
(3) Equity in administering the standards among all economically competing parties.
(4) Public health and welfare effects.
(5) Other factors which the Secretary, after consultation with the Administrator, may deem relevant to the case in question.
(d)
(1) Documentation demonstrating that all good faith efforts to achieve compliance with such standard have been made.
(2) Documentation demonstrating that the inability to comply with such standard is due to circumstances beyond the control of the owner or operator of the aircraft.
(3) A plan in which the owner or operator of the aircraft shows that he will achieve compliance in the shortest time which is feasible.
(4) Applications for a determination that any requirements of § 87.11(a), § 87.31(a) or § 87.31(c) do not apply shall be submitted in duplicate to the Secretary in accordance with procedures established by the Secretary.
(e) The Secretary shall publish in the
(f) No state or political subdivision thereof may attempt to enforce a standard respecting emissions from an aircraft or engine if such aircraft or engine has been exempted from such standard under this part.