17 year-old Juliane Koepcke was sucked out of an airplane in 1971 after it was struck by

Juliane Koepcke, age 17, was sucked out of an airplane after it was struck by a bolt of lightning. She fell 2 miles to the ground strapped to her seat and survived. She had to endure a 10-day walk through the Amazon Jungle before being rescued. 1 survivor out of 93 passengers & crew. (December 1971)
(TITLE FROM EYE PHUNNY + various news outlets)
Snopes rates the story as true

You should read her stories, it's about as bad as it gets.
She had injuries all over her body and had to let worms eat her flesh so the dead part of it wouldn't get more necrosed. She could feel the worms eat her and she also ate them for food since she couldn't find anything.