Originally Posted by
LPS500
Its like the rotors weren't turning when it arrived at the scene. Would it / could it be possible that the helicopter landed on the glacier, shut down and toppled off ... ?
You don't need to *land* to stop your rotors. In a botched autorotation, for example, you might use up all your rotor energy (=rotor speed) while still flying. However, in that case you can't cushion the landing that well. Ref. Glasgow pub crash.