What was found
SUB THRESHOLD WEB AT BS 794 - 847, RBL23, WL157 CORRODED. REMOVED CORROSION ON THE ACB SUB THRESHOLD WEB IN AREA OF 2' X 1' X 0.02'DEEP ORIGINAL MATERIAL THICKNESS 0.050' FOUND TO BE OUT OF LIMIT IAW SRM 53-60-15-1A-1. LOCATED AND DRILLED NEW SUB THRESHOLD WEB IAW SRM 51-40-05-0G-0, AND DWG 146A8123 AND INSTALLED IAW SRM 51-40-02-0G-0, AND DWG 146A8340.