As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: MOMENTARY SMOKE DETECTOR AURAL ALERT AND ELECTRONIC CENTRALIZED AIRCRAFT MONITOR SMOKE INDICATION FLIGHT ATTENDANT CONFIRMED NO SMOKE, FALSE WARNING. CREW VERIFIED LAVATORY D SMOKE DETECTOR FOUND FILTER DIRTY. REMOVED AND REPLACED FILTER PER AMM 26-17-00-710.