As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT DECK, VISUAL ALERT INDICATION LAVATORY SMOKE OCCURRED, BUT NO CONDITION EXISTED FROM LAVATORY AFT LEFT LOCATION. NO EVIDENCE OF TAMPERING OF SMOKE DETECTOR. SMOKE DETECTION TEST PASSED IAW AMM 26-14-00 AND PERFORMED SATISFACTORY OPERATIONAL CHECK.