Okay, I'll stick my neck out and start.

The first two major errors I spotted were that the locater beacon was left at home, and that he had no survival equipment on his person (at least none that would start a fire.) Besides that, Its not clear if a flight plan was filed. I also have to wonder if his baggage was properly stowed since his sleeping bag "shot out the window" on impact.

On the positive side, he did have a handheld radio and a cell phone. He also kept his head and was able to set up a camp with the items from the plane. He was definitely fortunate that the landing occured in the trees and not on a lake otherwise his gear might have sunk.

What did I miss?

Chris