As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: LAVATORY SMOKE LIGHT ILLUMINATED IN FLIGHT. FLIGHT ATTENDANT COULD NOT SEE ANY SMOKE. LIGHT WENT OUT ON ITS OWN. MAINTENANCE PERFORMED SATISFACTORY OPERATIONAL CHECK OF LAVATORY SMOKE DETECTOR AND LIGHTS PER MM 26-14-00.