Trump administration moves to end 1973 supersonic flight ban over U.S. land, replacing it with noise limits by mid-2027; Boom Supersonic, Spike Aerospace developing quieter jets for sub-4-hour transatlantic flights.

Supersonic Flight Returning To US After Half-Century Ban

ToplineThe Trump administration has taken an important step in replacing a five-decades-old ban on supersonic flight over U.S. land, claiming technological advances now make it possible to fly faster than the speed of sound without the ear-shattering boom.A 2016 photo of Blake Scholl and Joe Wilding, two of three co-founders of Boom Supersonic, standing in front of an early model at the company's hangar in Centennial, Colorado. (Photo by Helen H. Richardson)Denver Post via Getty ImagesKey FactsT...