We had a Polish Master Nav (came to UK in 1940) on Meteor 12/14's in the 1950's who was known as "XYZ" as no one could pronounce his name. Great guy with a liking for Polish Spirit who would often have a flask with him on night flying. One night following a PI over the Western Channel close to France and above cloud the pilot asked for a steer but the only response was snoring from the back seat. Following a bit of violent flying and still no response from what was now a passenger in the back seat the pilot checked fuel states and called an emergency. Duly the French ATC came up and gave him a steer to one of their bases where they landed safely. I don't remember what the final outcome was but I seem to remember "XYZ" somehow talked his way out of it following a rather difficult conversation with the Boss.
Those were the days!