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 IN LAVATORY L FALSELY ACTIVATED TWICE IN FLIGHT. MAINTENANCE CHECKED AND CONFIRMED - SMOKE DETECTOR IN LAVATORY " L" FALSELY ACTIVATED. ACCOMPLISHED TASK 26-17-00-810-804-A LAVATORY SMOKE WARNING WITHOUT FIRE TSM AND TASK 26-17-00-710-001-A AMM OPERATIONAL CHECK OF LAVATORY SMOKE DETECTOR BY CFDS TO CONFIRM WARNINGS. LAST LEG AND PREVIOUS REPORT NO FAULT DETECTED.