What was found
AFT CARGO LEFT 'Z' CHANNEL HAS CORROSION ON FASTENER HOLES ON STA 767 TO 787<[01] REMOVED CORROSION AFT CARGO LEFT 'Z' CHANNEL AROUND FASTENER HOLES ON STA 767 TO 787 PER REF AMM 51-10-02-0G-0. ACCOMPLISHED NDT AND CHECKED LIMITS OF REWORKED AREA. ORIGINAL THICKNESS:.040'; MATERIAL REMOVED: .011'; MATERIAL REMAINING: .029'; AREA FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2. SINCE CORROSION FOUND ON TASKCARD TTG8Q00UZHH0 TO BE OUT OF LIMITS. LEFT 'Z' CHANNEL TO BE FABRICATED NEW ON TASKCARD TTG8Q00UZHH0.;[02] VERIFIED STEP 1.