As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: 4R DOOR SHOWING NOT ARMED ON STATUS PAGE IN FLIGHT. FLIGHT ATTENDANT STATES THAT VISUALLY IT IS ARMED. MAINTENANCE FOUND THE R4 SLIDE ARM LEVER NOT FULLY STOWING, ADJUSTED THE TRIPLE LEVER ROD AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 52-13-22.