Is supersonic flight banned over land?

Within a few years, the FAA formally proposed a rule to restrict the operation of civil aircraft at speeds greater than Mach 1. In 1971, Congress officially canceled the SST program. The ban on civilian supersonic flights over land went into effect in 1973, and the ban remains in effect today.



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By the early 1970s however, opposition led to bans on commercial supersonic flight in Sweden, Norway, the Netherlands, West Germany, Switzerland, Ireland, Canada and the United States.

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In 1973, the Federal Aviation Administration banned supersonic commercial flights over land because of sonic booms — a prohibition that remains in effect today.

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Why don't we ever hear sonic booms any more? Noise abatement regulations halted supersonic flight (by civil aircraft) over U.S. land. The Concorde could still take off and land here because it broke the sound barrier over the ocean, but it's no longer in service.

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In any case, supersonic air travel for the masses looks like it's genuinely back on the cards. Boom is aiming for the first Overture test flights to take off in 2026 and for the planes to go into public service by 2029.

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Planes could go supersonic only over the ocean — most famously, the Concorde, the sleek British-French passenger plane that flew a handful of routes in less than half the average time.

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If you're WONDERing about how pilots handle sonic booms, they actually don't hear them. They can see the pressure waves around the plane, but people on board the airplane can't hear the sonic boom. Like the wake of a ship, the boom carpet unrolls behind the airplane.

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Changes in speed are expressed in multiples of gravitational acceleration, or 'G'. Most of us can withstand up to 4-6G. Fighter pilots can manage up to about 9G for a second or two. But sustained G-forces of even 6G would be fatal.

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