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 CARBON CROSSBEAM LEFT SUPPORT GUSSETT CORRODED IN LAV AT FLOOR LEVEL. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE CORRODED CARBON CROSSBEAM LEFT SUPPORT GUSSET IN LAV IAW EMB SRM 51-40-02. THE AIRCRAFT WAS RETURNED TO SERVICE.