It's supposedly a well known "Urban Myth" about a civillian having to land a plane when the pilot becomes incapacitated, but it did actually happen to my late first father-in-law during WW2.
As far as I can recall he was offered a flight whilst he was with the Royal Engineers upgrading and extending the airfield at Gibraltar. The pilot became unwell and blacked-out leaving him to land it.
I suspect that it was not an offcial flight and hence not officially recorded.