Originally Posted by
737er
This is an excellent discussion and one which I hadn't considered. In the case of jetBlue, if you put a new FA on the flight deck with with the sane FO then you would increase the odds substantially that she would have let the Captain back in if he was frantically banging on the door. Another aspect of unintended consequences in all this.
I thought it happened in the US, and the US has a 2 on the FD rule? From what I have read about it, the FO would have had no doubt that locking him out was the right thing to do if he had been able to hear what was happening in the cabin. Can he?