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"...The main reason that the rest of the world gave up on the Concorde was, 
in a word, noise. Because of the thunderous sonic boom produced when the
plane flies faster than the speed of sound - the result of the shock waves
of compressed air that form at the nose and tail of the plane, and 
then abruptly decompress when they reach the ground - the Concorde could
fly supersonic only over unpopulated areas: essentially, bodies of water and
uninhabited lands where no one was around to mind the racket. The
restriction severely limited air routes and all but ruled out lucrative
transcontinental routes such as New York-Los Angeles. Furthermore, the
Concorde is a very noisy plane even when it isn't flying supersonic, 
producing about 119 decibels of noise on takeoff -- roughly the same 
as a 1950s-era jet such as the Douglas DC-87, or the Who at the peak of 
their powers --versus 90 decibels or less for most aircraft"

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.....Puts the potential for hearing loss rather vividly, don't you think?

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