As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BOLTS, BUSHINGS SEIZED ON MAIN DOOR TOP HALF. INCORRECT HARDWARE STACK-UP, IE INTERNAL WRENCHING BOLT HAD PLAIN WASHER UNDER RADIUS OF HEAD. SEVERAL AIRCRAFT HAVE HAD THESE SAME PROBLEM OF SEIZED/CORRODED PARTS. CAUSED BY LACK OF LUBRICATION. MAIN DOOR BOLTS/BUSHING P/N MS20004-505111515-10