As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN FOR A C-CHECK, A ROUTINE OPERATIONAL CHECK OF DOOR 1R EMERGENCY PNEUMATIC ACTUATION SYS WAS PERFORMED. THE DOOR OPENED APPROXIMATELY 18 INCHES AND STOPPED, BECOMING JAMMED ON A PIECE OF ADJACENT STRUCTURE. THE DOOR RIG WAS ADJUSTED PER JIC 20002515 (MM 52-11-00) AND THE DOOR OPERATION WAS RE-TESTED IN BOTH PNEUMATIC AND ELECTRIC MODES. DOOR OPERATED SUCESSFULLY THREE TIMES.