As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE FORWARD LAVATORY SMOKE DETECTOR ALARMING WITH NO VISIBLE SMOKE. UNABLE TO STOP ALARM, BATTERY REMOVED. LAVATORY BLOCKED FOR USE. MAINTENANCE REMOVED AND REPLACED FORWARD LAVATORY SMOKE DETECTOR AND BATTERY. SECURED AND OPERATIONAL CHECK GOOD.