Quote Originally Posted by Mike Switzer View Post
Hmm.. I would think that would be plenty strong unless there was some sort of defect.
Strong enough, almost certainly. But from the facts so far available, the issue appears to be more one of stiffness than of strength, in particular torsional stiffness that increases flutter resistance.

The kinetic energy available to do aeroelastic mischief is proportional to the square of the velocity. Once you get up above about 200 knots, that curve is awful steep, and once flutter starts it can tear things apart astonishingly quickly.