Can anyone let us know what aircraft or aircraft in the same incident killed thousands of people on the ground? I am interested in aircraft accidents but I do not know at the moment of any that fit that category.

I'm talking about the 9/11 incidents involving the WTC, which while
deliberately caused, were not deliberately caused by the (original)
pilots or crew, but by a (n understandable) failure of the airline
industry to prevent the hijacking. That it is not possible to prevent
this kind of thing is part of the risk of big airplanes hitting people
on the ground (or connected to the ground via the structure of a building).

Jose
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