It's a plug door. The door nestles behind an array of cleats and a set of L shaped guide tracks and has to move up some distance, as you can see in the video, to clear the cleats and exit the L track. When it's dropped into the locked position, it's not dependent on any moving parts to resist pressure because it settles behind the fixed cleats in the outer ...
To maintain a comfortable temperature for the passengers, automatic
systems regulate the mixture of heat from the engines and cold from
the air packs. To maintain the pressure in the cabin equal to that at
low altitude, even while the airplane is at 30,000 feet, the incoming
air is held within the cabin by opening and closing an outflow valve,
which releases ...