I think it's happened in the USA a few times where somebody has talked a non flying person the basics in order to land, then again everything happens in the "land of the fee" !
I can recall some years ago now a woman was talked down when her hubby had a heart attack at the wheel & died (she wasn't sure he was dead at the time but you would think the worst that's 4 sure!), cherokee I think it was. Imagine trying to compose yourself to fly with the only help from the ground whilst yr mate is dead right beside you !
Twin engined planes, twin everything for safety but when it's a SP op there's only a single heart !
CW