Then there's the perhaps apocryphal story about the Ethiopian Airlines plane where the right seater came strolling into the passenger cabin and then came the left seater. A little turbulence and the cockpit door slammed shut. No key.
They took turns with an emergency axe and were able to gain entry just before the plane was about to enter Libyan airspace.
I actually saw a newspaper clipping about it.
I've wanted to tell that one forever!
Jim