What was found
DURING ROUTINE CPCP INSPECTION FOUND LEVEL 2 CORROSION FUSELAGE LWR AREA, BS 1200, RBL 58, WEB CORRODED AT O/B FACE LWR AREA. REMOVED CORROSION IAW B747 SRM 51-10-01. FABRICATED REPAIR IAW B747 SRM 51-40-02. INSTALLED REPAIR IAW BOEING 747 SRM 51-40-02. CORROSION TASK CARD NUMBER C53-100-01. NON-ROUTINE TASK CARD NUMBER 26227.