Cockpit security, in large passenger aircraft is a double armored door structure, with a passage lock between them, with a locking action in flight through a switch from the undercarriage and single door control from the cockpit

摘要

The security barrier between the aircraft cockpit and the cabin, especially in large passenger aircraft, is an armored double door structure with a passage lock between them. The locking mechanisms are set so that only one door can be opened at a time, under control from the cockpit, and the door towards the passengers cannot be opened from the cabin. The doors are locked through the effects of take-off, when the undercarriage is relieved of the aircraft weight, and the locking action is released on landing when the undercarriage is under a load. The secure space between the doors can accommodate toilets and catering facilities for the cockpit crew.