What was found
DURING MAINTENANCE BASE INSPECTION FOUND THE TOILET WASTE DRAIN VALVE SUPPORT CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE TOILET WASTE DRAIN VALVE SUPPORT IAW EMB 145 SRM 51-40-02, 51-20-03, 51-40-04, 51-40-06, AND 51-20-01. THE AIRCRAFT WAS RETURNED TO SERVICE.