The captain of an SAS flight from Copenhagen to Stockholm fell asleep at the controls while he co-pilot was taking care of some business in the bathroom. The pilot said that he was completely exhausted and was fighting to stay awake during the flight (one of 5 he was flying that day), but ultimately he fell asleep during the trip, which occurred last year.
The co-pilot had to buzz the cockpit repeatedly to wake up the exhausted captain. The plane was on auto-pilot at the time.
SAS said that having a pilot fall asleep mid-flight was “unusual” but they have not disciplined him.