Originally Posted by
Jonty
From what I understand, there’s a whole section of door at the top that folds inwards (but not by much) this allows the door to move upwards and over the door stops, then out. So the pressurisation should hold the door against the stops, and not allow the panel at the top to move inwards.
The panel is just a relatively flimsy bit of falsework that conceals the two upper door supports when the door is closed and drops down when the door is opening to allow clearance for them to operate:
The panel doesn't play any part in containing or relieving cabin pressure, nor in allowing upward movement of the door.
In the photo of the Asiana aircraft, one of the two supports can be seen to have detached and is hanging down.