As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT WAS NOT GROUNDED. THE FORWARD LAVATORY SMOKE DETECTOR ACTIVATED SEVERAL TIMES IN A 3 MINUTE PERIOD. PASSENGER WAS USING LAVATORY AT THE TIME. THERE WAS NO SMOKE OR UNUSUAL ODORS PHYSICALLY DETECTED. REPLACED FORWARD LAVATORY SMOKE DETECTOR PER MM 26-14-01. OPERATIONS CHECK NORMAL.