As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GNDED. IN CRUISE, AFT RT LAVATORY SMOKE ECAM ILLUMINATED WITH ASSOCIATED FIRE BELL. BOTH LIGHT & BELL THEN EXTINGUISHED. REPLACED AFT RT LAVATORY SMOKE DETECTOR FILTER & ACCOMPLISHED A SATISFACTORY SYS BITE CHECK IAW AMM 26-17-00-710-001A.