As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER DECK DOOR RT SIDE WILL NOT ARM. UPPER DECK DOOR FLT LOCK ACTUATOR WILL NOT ALLOW THE ARMING MECHANISM TO ARM THE RIGHT DOOR. ON DOOR OPENING INSPECTED MECHANISM AND FOUND ARMING LEVER CRANK TRIGGER FINGER TO LOWER CONTROL ROD MATING SURFACES DRY AND IMPEDING MOVEMENT. BUTTER LUBRICATED TRIGGER FINGER AND MATING SURFACE OF CRANK ARM WITH MOTION RESTORED. DOOR NOW ARMS NORMALLY AND COMPARABLE TO LEFT DOOR.