Quote from P5YcHoM4N :

Concorde had the lowest crash rate out of all jet liners, but because of what happened they had to change the tryes on the whole fleet, which cost so much people couldn't afford to fly with them and they went belly up.

Heh, I just watched a BBC documentary on the Concorde.

An interesting fact that impressed me a lot: before the Concorde was grounded for ever, it was having these safety issues fixed and was scheduled to fly again. On the morning of that dreadful 9 /11 they were actually having the first test flight from England to the middle of the Atlantic and then back again!