That's a good guess!
At what point do the wings fail?
Where is the failure?
Does one or both fail catastrophically or gradually?
Remember, if there is no video, the failure was caused by a "beam weapon".
ETA: We could always let pffft do the calculations and they never fail on this depicted approach. They only fail on the "hockey stick" approach!
I think (I am no engineer or any other expert on matter) that it would be more instant fail if it would be significantly above "hard" limit,which it appears to be case. If "where" is 'Where in the proposed flight path it occures?' , then my nonexpert answer would be around the point with writtent words 'saw the north' as it appears to have peak of curve.
However if question is 'Where is the fracture point of the wonf on the plane?' then I don't know answer,at least at this time.
'Hocky stick' approach would definitly end in Pentagon or if frame would magically held then turn everybody into mess...
Note: I am no expert, I can only use what I remember from physics clases which I took before change of "carrier" including some laboratory experiments.