Trooping charter, British Eagle DC6 to Bardufoss back in the 60s; shortly after take-off the captain gave the usual briefing and ended with an invitation to visit the flight deck if anyone felt like it. In those days this was probably their first flight for many of the Commandos on board.
Eventually one brave soul stood up and asked a steward if he could have a look. The steward went to ask, and came back to tell him just to go though the door. He did that. After a good 5 minutes he reappeared looking slightly anxious, came to the back of the cabin, leant down and said very quietly "Excuse me, Sirs, did you know that there are no pilots up there?".
We told him to go back there without telling a soul, and fly the aircraft until we could sort out what to do. He went back to the flight deck determined to do his best. He returned after a while to say that all was well, the crew were just having a laugh..
The entire flight deck crew had hidden in the crew bunk.