Proposed rule: Enabling Supersonic Overland Flight

Agencies: Transportation Department, Federal Aviation Administration — This proposal would advance the United States' leadership in next-generation aviation by replacing the longstanding prohibition on civil supersonic flight over land with a modern, performance-based regulatory framework. Consistent with national policy set forth by the Executive Order of June 6, 2025, Leading the World in Supersonic Flight, this action would enable the safe, efficient, and commercially viable operation of civil supersonic aircraft in the United States. Current regulations prohibit flight operations of civil aircraft at a true flight Mach number greater than 1 in the U.S., except under the conditions and limitations of an operation-specific authorization from the Administrator, to protect the public from…