Originally Posted by
ThreeIfByAir
If I could post photos I would, but look at the post immediately below yours and compare with the photos upthread of correctly-fitted plugs _and_ doors. In both cases the frame of the door or plug is secured to the aircraft with what appear to be twelve bolts/large screws installed from the inside. These match with fairly sturdy protrusions from the fuselage and (to the untrained eye) are pretty hefty mechanisms for holding the plug (or the door frame) in place. (To be clear, look at spornrad's picture -- the things at the top and bottom)
In the picture of the accident aircraft, you can see the four top protrusions from the fuselage (they're pretty obvious) and they appear to have metal in them where the bolts would be. But the frame is completely absent, along with the first parts of those screws/bolts, leaving the rest attached to the fuselage.
It's entirely possible I'm missing something, please (and I'm serious) tell me why I'm wrong.
Yes, you have it a bit wrong. There are not 12 bolts there, they are just contact pads for the stops. There is nothing that appears to be sheared or missing with the stops.