Dried Ears: "DenisG makes a very good point at post number 1586:
'(2) Has/have the Captain and crew attempted to use the security code to enter the FD (30 sec call sound on FD, should be hearable on CVR)? If not, why?'
Why did the French prosecutor in his hasty sweeping statement today not mention this, or lack of it?"
Probably because they didn't hear it? And as many have pointed out already, if the door is set to "locked", the buzzer would be inhibited.