United Airlines has said that it will buy ultra-fast jets from Denver-based aerospace company Boom Supersonic, bringing back supersonic passenger travel which died out with the retirement of the Anglo-French Concorde in 2003.
Under the agreement, the airline will purchase 15 of Boom's "Overture" aircraft once they meet United's safety, operating and sustainability requirements, with an option for an additional 35 aircraft.
The announcement comes less than two weeks after Aerion's plans to produce a supersonic business jet faltered due to a lack of funding for production.
Fuel
Supersonics have come under criticism from environmentalists for burning more fuel per passenger than comparable subsonic planes.
United, which has pledged to reduce its greenhouse gas emissions 100% by 2050, said that the aircraft will be optimised to use 100% sustainable aviation fuel (SAF) from its entry to service, projected to be in 2029.
Currently, commercial aircraft engines are certified to fly with 50% of alternative fuel, with the rest using ordinary kerosene, but available supplies fall far short of that level.
Transatlantic Flying Time
Boom's Overture, a supersonic aircraft with 65 to 88 seats which will be initially priced at business class fares, would cut transatlantic flying time by 50% to about three-and-half hours.
End Of The Era Of Regular Commercial Supersonic Flights
The era of regular commercial supersonic flights ended in 2003 when Concorde, flown by Air France and British Airways, was retired after 27 years of service.
The plane's noisy sonic boom prohibited it from flying over land routes, and it suffered a double blow with a fatal crash in Paris in 2000 and the downturn in the aviation industry after the September 11, 2001 attacks on the United States.
Hurdles From Regulators
The return of supersonic jets faces hurdles from regulators such as the Federal Aviation Administration (FAA), which must first give approval for them to fly at supersonic speeds over land, along with pressure from groups like airports that want the planes to be no noisier than comparable subsonic aircraft.
Deposit Made
United did not disclose any financial details, though a spokesperson said a deal is in place and a deposit had been made.
Not A Firm Order
Earlier, United's head of corporate development, Mike Leskinen, told The Air Current in an interview that the transaction was not a firm order but it involved United taking the lead on "a real aircraft" project.
Meets The Terms Of A Commercial Agreement
A Boom spokesperson said that the order meets the terms of a commercial agreement.
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