As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. SMOKE DETECTOR AURAL ALERT IN LAV 3F-2R AND SMOKE LAVATORY MESSAGE IN COCKPIT FOR A DURATION OF 5 SECONDS, CONFIRMED NO SMOKE PRESENT AND NOBODY IN THE LAV. PERFORMED ALL TESTS, IAW FIM 26-14-00-810-808. OPERATIONS CHECK GOOD.