and tonight a very tough and very brave 16-year-old girl is speaking out to abc's kayna wentworth. >> was positive i was going to die. then i was positive i was going to live. >> reporter: bandaged hand, burns and bug bites, autumn told an incredible story of survival today for the first time. >> completely white. and then as we were starting to go up i could see the trees and we crashed and i felt everything vote. >> reporter: for the 16-year-old, the traumatic experience of surviving a plane crash was just the beginning. injured and alone, she stumbled through the unfamiliar and treacherous wilderness of the northern cascades. for two days and two nights she was desperately searching for help. >> we crashed and i was the only one that made it out. >> reporter: her life she credits in large part on survival skills she learned from watching shows like "survivor man." >> this is slick rock country. when that rock gets wet you fall you slip very easily. people die here every single year. >> reporter: it all began on saturday. >> were you hesitant about getting on the flight in the first