As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. RT AFT LAVATORY SMOKE DETECTOR AURAL ALERT SOUNDED FOR APPROXIMATELY 10 MINUTES, NO SMOKE DETECTED AND LAVATORY WAS UNOCCUPIED. ACCOMPLISHED SMOKE DETECTOR SYSTEM TEST, IAW AMM 26-14-00. OPERATIONS CHECK GOOD.