What was found
DURING MAINTENANCE BASE INSPECTION, FOUND THE LAVATORY LEFT BEAM GUSSET CORRODED AT THE FORWARD END. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND INSTALLED NEW SERVICEABLE LAVATORY LEFT BEAM GUSSET IAW SRM 51-40-02, 51-20-03, 51-20-01, 51-40-09. THE AIRCRAFT WAS RETURNED TO SERVICE.