As beamer said, there is no way :
- any CC will prevent the pilot to crash the aircraft if he has decided to do so. A couple of abrupt flight controls inpurs would send the poor fellow banging his head on the roof breakers panel ....
- in order to prevent the CC to open the door to one of his budies (in a remake of 9/11 scenario) robust SOPs wil have to be enforced, preventing the observer CC to operate the door knobs. This door will be opened by remaing pilots, to the other pilot only.
- I for sure will spend this time in the cockpit :
- not talking to the CC
- monitoring this guy continuously, until the F/O comes back....
