Small comuters are the most likly to Crash (need any help? i am a pilot in traing 😛 ) But did you here about the plane over sibira that the door oppend at 10 000 feet? the people were blown out of the cabin and fell.....10 000 feet to there deaths. Don't worry. at that altitude there is not that much oxygen. So the past out and did not feel anything ( at 13 000 feet you need oxygen masks)