Mark, I've told you not to fly when you are already tired.  ;D

Cadet pilot asleep at the wheel during 250km snooze
http://www.heraldsun.com.au/news/more-news/cadet-pilot-asleep-at-the-wheel-during-250km-snooze/story-fn7x8me2-1226064756146
But a safe outcome there, although that pilot's career may have ended due to the medical circumstances.  :-/