What was found
AFT CARGO BILGE AREA; R/H SIDE 'Z' CHANNEL FROM STA#867 TO STA#887; SPOTS OF CORROSION AROUND FASTENER HOLES. REMOVED CORROSION AFT CARGO BILGE AREA R/HZ CHANNEL. FOUND OUT LIMITS EXFOLIATION CORROSION AREA IAW SRM 51-10-02-0G-0 VERIFIED 1 PERFORMED UT THIKNESS INSP. ON REWORKED AREA @ AFT CARGO BILGE AREA R/H SIDE Z-CHANNEL IAW NDT PART 4 51-00-00 PROC. 3. MIN THICKNESS .026'. ORIGINAL THICKNESS 0.040'' AFTER REWORKED AREA MINIMUM MAT FOUND 0.026 MAT LOST 0.14'. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 FIG 103 DETAILS A, B, C, D, & E. NEW Z-CHANNEL TO BE INSTALLED ON ITEM# TTQ004ECQV.