As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: AFT RIGHT LAVATORY MOMENTARY ECAM IN FLIGHT SMOKE LAVATORY SMOKE. FLIGHT ATTENDANTS FOUND NO EVIDENCE OF SMOKE. MAINTENANCE FOUND LAVATORY D SMOKE DETECTOR FILTER DIRTY. MAINTENANCE CLEANED AND REPLACED PER TSM 26-17-00-810-804-A.