As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FORWARD LAVATORY SMOKE LIGHTS FLASHING ON AND OFF - FLIGHT ATTENDANT CHECKED AND REPORT NO ISSUES BUT BLOCKED IT OFF FROM FURTHER USE - MAINTENANCE ACCOMPLISHED FORWARD LAVATORY SMOKE DETECTION SYSTEM TEST PER TSM 26-17-00 WITH NO CURRENT FAULTS NOTED