As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN ENTRY DOOR HINGE FAILED DUE TO CORROSION BETWEEN THE HINGE PIN AND THE LUGS ON THE HINGE ITSELF. UPON DISASSEMBLY, DETERMINED APPROX 50% OF HINGE WAS LEFT INTACT, AND 50% OF LUGS HAD ATTACHED TO HINGE PIN AND SHEARED THE PIN AT EDGES OF LUGS. DAMAGE WAS REVEALED WHEN ONE 5 LUG SEGMENT OF HINGE BROKE FREE AND DAMAGED DOOR SKIN WHILE ROTATING. DAMAGE WAS NOT APPARENT OR VISIBLE DURING NORMAL VISUAL INSPECTION AT PREVIOUS PHASE INSPECTION EVENTS.