What was found
CORROSION ON FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BAY BS440 - BS500D LBL23 WL157. REMOVED CORROSION IN MULTIPLE AREAS OF 1' X 1' AT FCB FLOOR TO SIDEWALL SUPPORT BS400 TO 500D LBL23; ORIGINAL THICKNESS .040' MAX MAT REMOVED .008' REMAINING .032' FOUND TO BE OUT OF LIMITS; REMOVED AND REPLACED FCB FLOOR TO SIDEWALL SUPPORT LBL23 BS400 TO 500D WITH REPAIR SPLICE BETWEEN BS480-500 IAW SRM 51-40-02. SRM 53-00-53-2R-6 AND DWG 143A7501.