Originally Posted by
Alloyboobtube
The wings however would be crushed by the water pressure and then still with trapped air inside floated up.
This is questionable.
If the water was not too deep and the tanks were not crushed by the water pressure then they may well break free and float. I believe that was the case with the RNlN Atlantic that crashed off the west coast of Scotland. IIRC parts of the aircraft indeed surfaced after a day or two.
In very deep water, unless the wings broke off early in the descent before the pressure crushed the tanks then maybe. If it went very deep then I would expect the tanks to be crushed.
The other question is what would float. If fuselage was largely undamaged then there may be little escape of buoyant material.