Actually I think the opposite ,,,some might be killed quick ,,,but I bet the majority weren't ....
I'm led to believe them SAF missiles detonate befor they hit the plane,,and it's the shrapnel that downs the plane,,,,I bet born hunter knows ...
So it wouldn't surprise me if some folk are alive befor they hit the deck,,,or possibly unconscious with the altitude...
only the last inch of the fall would hurt