I have been involved in the attempted rescue in several aircraft "mishaps." Sadly, all but one were fatal to all involved. In that one case, a single engine high wing stalled at low speed, low altitude, while in a pretty tight right turn. Fell from the sky like a rock, coming down mainly on the right wingtip, which crumpled, absorbing a lot of the damage. The pilot, sole occupant, had broken everything, from skull fracture to all four limbs (ankles severly), and multi internal injuries. He barely made it, required numerous surgeries, was in quad casts for several months. Oh, I almost forgot, he was also soaked in fuel, but luckily nothing ignited. In cases like that, basic life support is about all you can hope to do...
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OBG