49 U.S.C. § 47530

Sections 47528(a)–(d) and 47529 of this title do not apply to aircraft used only to provide air transportation outside the 48 contiguous States. A civil subsonic turbojet aircraft with a maximum weight of more than 75,000 pounds that is imported into a noncontiguous State or a territory or possession of the United States after November 4, 1990 , may be used to provide air transportation in the 48 contiguous States only if the aircraft complies with the stage 3 noise levels.