Originally Posted by
Ftrooppilot
Pilot left cockpit to visit restroom. Radicalized FO locks the door and says "my airplane, " pulls CBs, turns off switches and goes about his "thing" - whatever was planned.
"retake cockpit " riot starts in back. Steep turns and altitude changes puts all back in their seats. Climb above 40,000 feet, put on oxygen mask, dump cabin pressure. Cabin O2 system does not cope with 40,000 feet pressure altitude. Time of useful conscienceless probably about 30 seconds. Five minutes later most are deceased. Descent to lower altitude, engage autopilot, sit back and wait for fuel to run out.
It's beginning to sound like the person in the cockpit knew what he was doing.