As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE INSPECTION FOUND THE LAVATORY CENTER BEAM GUSSET CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPLACED THE LAVATORY CENTER BEAM GUSSET WITH SERVICEABLE GUSSET IAW EMB SRM 51-40-02. THE AIRCRAFT WAS RETURNED TO SERVICE.