As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAVATORY SMOKE DETECTOR GOING OFF. DID NOT STOP UNTIL THE CIRCUIT BREAKER WAS PULLED IAW THE CHECKLIST. REMOVED FROM SERVICE. VERIFIED CIRCUIT BREAKER RESET AND COMPLIED WITH AN OPS TEST OF SMOKE DETECTOR IAW AMM 26-12-11-710-801. OPS CHECK GOOD. NO EVIDENCE OF SMOKE OR FIRE NOTED IN LAV. NO DEFECT NOTED AS THIS TIME. COULD NOT DUPLICATE. NO PARTS REPLACED. RETURNED TO SERVICE.