As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT SERVICE DOOR HAD GUIDE PIN DISLODGED WITH SPRING MECHANISM ON DOOR CATCH FOR DOOR BAYONETTE. MAINTENANCE REPLACED UPPER AND LOWER LINKS THAT HOLD GUIDE PIN IN PLACE ON THE SPRING MECHANISM OF AFT SERVICE DOOR IAW AMM 52-40-05 AND PERFORMED SATISFACTORY OPERATIONAL CHECK.