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§ 91.853
Final compliance: Civil subsonic airplanes.
Except as provided in § 91.873, after December 31, 1999, no person shall operate to or from any airport in the contiguous United States any airplane subject to § 91.801(c), unless that airplane has been shown to comply with Stage 3, Stage 4, or Stage 5 noise levels.
[Docket FAA-2015-3782, Amdt. 91-349, 82 FR 46132, Oct. 4, 2017]