Originally Posted by
EDLB
Looks that all hinge bolts are still there so they should be able to figure what happened without the missing door. Strange that the door blew so low with little pressure differential. There must have been something serious amiss. Not a crack or single bolt failure, more like no bolt nuts at all and hold in place by luck and paint.
I don't think there are any hinges involved when the dummy door is fitted (obviously there are when it's an actual downwards-opening exit).
Looks like a pretty clean departure - those appear just to be seat trims/seat belts hanging out the opening:
