Originally Posted by
magiccarpet
Hearing some noise now that the crew may have been trying to control the pressure manually. Seems like this plane was having issues with its auto controllers. Is it possible that they inadvertently closed the valve completely, overwhelming the two pressure relief valves causing the door to blow out like it did? Seems like these plug doors would be the next weakest thing to give way.
Its not possible. The door appears to have more or less fallen out. There is no apparent damage to the aircraft. The plugs are also as strong or stronger than a door. The overpressure relief valves would also have needed to fail. I bet money in the end the proper fasteners were not in place and the door shifted during unpressurized periods until the lugs were barely engaged leading to the plug loss as the aircraft started to pressurize.