Boom Supersonic has received official Federal Aviation Administration clearance in a Special Flight Authorization (SFA) to break the sound barrier – deemed Mach 1 or 1 times the speed of sound – with their XB-1 prototype and chase aircraft. For Boom Supersonic, the accomplishment is just one small legal step in many to produce supersonic aircraft.
Boom Supersonic Receives Special Flight Authorization (SFA) to Exceed Mach 1
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