Passenger planes are optimized to run at a relatively sedate speed. Press them to run faster and you’ll find out just where the weakest part is.
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Feels to me parts of the plane were going sonic.
Them boys were in a hurry.
I’m not an aviation engineer, but my recollection is that planes optimized for a subsonic speed have thicker wings than those that run supersonic. When a plane designed for speeds under the sound barrier approach the sound barrier a pulsating pressure wave (called compressibility) builds up on the wing and eventually tears it off.