So baring in mind that this was not an intentional "discharge" (so much for the flight crew meal tables on the airbus being able to take the weight of a hosty), what would happen if both crew were injured/killed by the bullet, while they are behind a locked door. I guess the cabin crew wouldn't know nor necessarily be able to access the cockpit if they did. Would the aircraft be shot down by fighers when it didn't respond to ATC?
I don't know the Airbus pressurisation system. Could a single bullet destroy the controller causing a depressurisation as it could in my aircraft?
I see terrorist taking over the cockpit as a potential threat but I view a gun in the cockpit as a bigger one.
Chips