As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: LAVATORY SMOKE DETECTOR AURAL WARNING OCCURRED 4 TIMES DURING FLIGHT SMOKE UNCONFIRMED / FALSE WARNING. ACCOMPLISHED TSM 26-17-00-810-804-A CHECKED SMOKE DETECTOR FAULT SMOKE WARNING REPORT NO DISCREPANCIES NOTED, CLASS 3 FAULT SHOW NO FAULTS DETECTED, INSPECTED ALL LAVATORIES SMOKE DETECTORS, THEY ARE CLEAN AND NOT COVERED BY DUST.