Originally Posted by RayCee
I always thought the plane was floating at a great depth and drifting south
Anything on an aircraft that had the potential to provide some sort of buoyancy, is not designed to withstand the pressure differential it would meet as it sunk. Put into perspective, at a depth of 4500m the pressure imparted is the equivalent of just under 1 atmosphere per 10m - in this case 447.4 atm / 6575 psi.
The aircraft will be on the bottom - wherever that may be.