As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD LAV SMOKE DETECTOR TRIGGERED. NO SMOKE OR FUMES OF ANY SORT IN LAV NOBODY VAPED/SMOKED. PERFORMED LAV. SMOKE SELF TEST. TEST PASSED IAW AMM-26-14-00-710-801. PERFORMED SMOKE TEST, TEST PASSED. IAW AMM-26-14-00-730-801, COULD NOT DUPLICATE PROBLEM.