As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING B INSPECTION FOUND THE LAV RIGHT FLOOR SILL CORRODED JUST FORWARD OF THE CARBON BEAM. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE LAV RIGHT FLOOR SILL JUST FORWARD OF THE CARBON BEAM IAW EMB SRM 51-40-02. THE AIRCRAFT WAS RETURNED TO SERVICE.