As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FORWARD LAVATORY SMOKE DETECTOR APPEARED ON ECAM FOR APPROXIMATELY FIVE SECONDS THEN WENT OUT. THOROUGH INSPECTION OF ALL LAVATORIES WAS NORMAL. MAINTENANCE ACCOMPLISHED RESET PROCEDURE AND PERFORMED SATISFACTORY OPERATIONAL CHECK OF SMOKE DETECTOR SYSTEM PER AMM 26-17-00.