As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: LAVATORY SMOKE INDICATIONS PREFORMED QUICK REFERENCE HANDBOOK PROCEDURE FLIGHT ATTENDANTS FOUND NOTHING. INSPECTED AND PERFORMED LAVATORY SMOKE DETECTOR OPERATIONAL TEST ON ALL 3 LAVATORIES PER AMM 26-14-00. NO DEFECTS NOTED AND OPERATIONS CHECKS OK. ALL 3 LAVATORIES OK FOR SERVICE.