As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAVATORY SMOKE WARNING ANNUNICATOR GIVES FALSE ALARMS INFLIGHT. AIRCRAFT PERFORMED NORMAL SCHEDULED LANDING IN PVD. MAINTENANCE WAS DISPATCHED, TROUBLESHOT AND CLEANED THE CANNON PLUG ON THE LAVATORY SMOKE DETECTOR. AIRCRAFT WAS RETURNED TO SERVICE.