49 U.S.C. § 41738: Fitness of air carriers

Notwithstanding section 40109(a) and (c)–(h) of this title, an air carrier may provide air service to an eligible place or air transportation to a place designated under section 41736 of this title only when the Secretary of Transportation decides that—(1) the carrier is fit, willing, and able to perform the service or transportation; and (2) aircraft used to provide the service or transportation, and operations related to the service or transportation, conform to the safety standards prescribed by the Administrator of the Federal Aviation Administration.