The cockpit access protection system relies on a method whereby the locked cockpit
doors of a plurality of aircraft may be unlocked only by authorized personnel within
the cockpit (e.g., the pilot and copilot). In the event of a security breach in
any one aircraft, the control of the cockpit doors of all aircraft shift to a ground
control center which commands all cockpit doors to remain locked until the security
breach is removed. In this way, neither flight attendant personnel within the aircraft
cabin nor the pilot or copilot within the cockpit can be forced to unlock the cockpit door.
