As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAVATORY SMOKE WARNING DETECTOR LIGHT ILLUMINATED INTERMITTENTLY DURING FLIGHT. FLIGHT PROGRESSED WITHOUT INCIDENT. LAVATORY FIRE EXTINGUISHER WAS FOUND TO BE SERVICEABLE WITH NO SIGNS OF SMOKE IN LAVATORY. REMOVED AND REPLACED LAVATORY SMOKE DETECTOR. OPERATIONALLY CHECKED GOOD. (M)