What was found
DURING ROUTINE CPCP INSPECTION, FOUND LEVEL 2 CORROSION STA760 FWD LBL72 FLOORBEAM HAS CORROSION. CORROSION FOUND TO BE OUT OF LIMITS IAW B747 SRM 53-10-1. CUTOUT CORRODED SECTION OF UPPER CHORD AND FABRICATED REPAIR IAW SRM 51-40-4 FIG 1. ALSO AIA EDR NR B4-05876. CORROSION TASK CARD NUMBER C53-210-07. NON-ROUTINE TASK CARD NUMBER 25206.