As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOPT GROUNDED: SMOKE DETECTED BY SMOKE DETECTOR 03L LAVATORY AURAL ALERT SOUNDED REPEATEDLY. NO SMOKE DETECTED BY FLIGHT ATTENDANTS. ALARM SILENCED AT ABOUT 30 MINS AFTER TIMING OUT. NO MESSAGE ON ARRIVAL INTO DUB. MAINTENANCE ACCOMPLISHED FIM 26-10-F3 WITH FAULTS NOTED.