As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT LAVATORY SMOKE DETECTOR WENT OFF AND OVERHEAD LAVATORY SMOKE LIGHT CAME ON. NO SMOKE DETECTED. CREW INDICATED LAVATORY WAS OCCUPIED AT TIME OF ALARM. MAINTENANCE ACCOMPLISHED VISUAL INSPECTION OF LAVATORY AND SMOKE DETECTOR AND ACCOMPLISHED SMOKE DETECTOR SELF TEST IAW AMM 26-14-00.