Trump eliminates restrictions against supersonic flights over the U.S.

In an executive order released on June 6, 2024, President Trump eliminated the half-century-old regulations that forbid supersonic airplanes to fly over the land mass of the United States.

The Administrator of the Federal Aviation Administration (FAA) shall take the necessary steps, including through rulemaking, to repeal the prohibition on overland supersonic flight in 14 CFR 91.817 within 180 days of the date of this order and establish an interim noise-based certification standard, making any modifications to 14 CFR 91.818 as necessary, as consistent with applicable law. The Administrator of the FAA shall also take immediate steps to repeal 14 CFR 91.819 and 91.821, which will remove additional regulatory barriers that hinder the advancement of supersonic aviation technology in the United States.

This order makes sense for several reasons. First, the restrictions were always absurd. The sonic boom concern was always over-rated. Second, the concern increasingly doesn’t exist due to improvements in technology. In a flight test in January, the commercial supersonic airplane startup Boom Aerospace confirmed that its test plane broke the sound barrier three times and each time with “no audible sonic boom.”

Though Boom isn’t the only supersonic startup, it is far ahead of the others. It already has orders from United and Japan airlines for its Overture 80-passenger supersonic jet. This new Trump order will certainly help it attract investment capital, as well as more airlines willing to buy its planes.

Boom about to go supersonic

The commercial supersonic airplane company Boom is on the verge of flying its XB-1 test vehicle faster than the speed of sound.

The company has been doing a regular test flight program, each time increasing the plane’s speed.

During the latest 44-minute flight at an altitude of 29,481 ft (8,986 m) with Chief Test Pilot Tristan “Geppetto” Brandenburg at the controls, the prototype aircraft reached transonic speed. That is, flight so close to Mach 1 that some areas of airflow over the airframe exceed the speed of sound.

It’s also the point where the XB-1 was subjected to a maximum dynamic pressure of 383 Knots Equivalent Air Speed (KEAS), which is a pressure on the fuselage and wings greater than what it would experience when flying supersonic at Mach 1.1.

In short, XB-1 pushed what was once called the Sound Barrier.

Next step: break the sound barrier.

At the completion of this testing the company will then begin manufacture of its full scale supersonic passenger plane, dubbed Overture, that will carry up to 80 passengers and will sell to airlines. It already has contracts and financial support from a number of major airlines, including United and Japan Airlines.