What was found
DURING C-6 CHECK, MAINTENANCE DISCOVERED TWO AREAS OF CORROSION ON THE FORWARD LOWER CARGO DOOR, LOWER BEAM AROUND TWO NUT PLATES AT STA 481 AND 597, WL 232. THE CORROSION WAS BLENDED IAW REF /A/ AND THE MATERIAL REMOVED WAS FOUND TO BE GREATER THAN THE 10% ALLOWABLE MATERIAL LOSS. AT STA 481 NOMINAL MATERIAL THICKNESS IS 0.125¿, AND THE MINIMUM THICKNESS REMAINING IS 0.110¿ REPRESENTING A 12.0% LOSS. AT STA 597 NOMINAL MATERIAL THICKNESS IS 0.125¿, AND THE MINIMUM THICKNESS REMAINING IS 0.094¿ REPRESENTING A 24.8% LOSS. FVCI WAS CONTACTED TO PROVIDE REPAIR INSTRUCTIONS AND APPROVAL FOR BOTH OUT OF LIMIT BLENDS. REAIRED IAW ABX REA-5230-66264-00