Stress Fracture maybe.
Or there was a Large and Incharge Tour Group traveling and they all picked the back of the plane, and they had 50 Miss Teen Usa's in the front (their boobs weigh more then their whole body...all 3 lbs of them).
When it landed, the fat peeps bounced up, and smashed down at the same time. When this happend, the weld couldn't take much more, and it gave in.
Brooklyn, Queens, Manhattan, Staten, Uptown, what now? Lets make it happen.