What was found
FWD CARGO COMPARTMENT FLOOR STRUCTURE AT LBL 25; WL 156; STA 500A+12 TO 500F; Z-ANGLE HAS NUMEROUS AREAS OF CORROSION ON UPPER SURFACE; MARKRD. / REMOVED CORROSION AND VERIFIED MATERIAL LOSS AT FWD CARGO COMPARTMENT FLOOR STRUCTURE AT LBL 25 WL 156 STA 500A+12 TO 500F 'Z' ANGLE ORIG .040 REMAINING .034 LOSS OF .006 OUT OF LIMITS I/A/W SRM 53-00-53-1A-2; FABRICATED AND INSTALLED NEW 'Z' ANGLE AND TWO SPLICE ANGLE AT 500A+9 I/A/W SRM 51-40-02-0G-0 AND SRM 53-00-53-2R-5 AND BOEING DWG # 143A7500 REV:- A-TAG # A21664; A49867. P/N 143A7501-187.