What was found
INDICATION NOTED AT FS 409+128, WL 69.0, LBL 18 INBD CHANNEL 55 PERCENT FULL SCREEN HEIGHT APPROXIMATELY .250" LENGTH IN RADIUS, FAILING NDT. REMOVED POST ASSEMBLY AT FS 409+128 LBL 19 IAW SRM 51-42-06. INSTALLED POST ASSY AT FS 409+128, LBL 18 IAW SRM TASK 51-42-06 AND 601R-53-41-889. UPON FURTHER INVESTIGATION, FOUND OTBD CHANNEL AT FS 409+128, LBL 18 TO BE GOUGED IN MULTIPLE PLACES, REQUIRES REPLACEMENT. LOCATED AND DRILLED INBD CHANNEL, PN:601R32208-31S AND OTBD CHANNEL, PN:601R32208-155 IAW SRM 51-40-11. COMPLIED WITH EC/TC REO:601R-53-41-889 AND MET ALL REQUIREMENTS OF REO:601R-53-41-889, REV A.