What was found
UPPER CENTER TANK SKIN EXTERNAL ANGLE VISIBLY CRACKED AT BS 663, RBL 45'-50.5', WL 195. VERIFIED CRACK USING HFEC IAW IAW NDT P6 51-00-00 P23. CRACK RUNS FROM RBL 45 FLOOR BEAM THROUGH AFT RADIUS TERMINATING AT RBL 50.5 FASTENER. REMOVED ALL FASTENERS COMMON TO DAMAGED SECTION IAW SRM 51-40-02-0G-0 & EA 22-157-01405-WIP1. TRIMMED, LOCATED, & DRILLED REPLACEMENT ANGLE IAW EA 22-157 01405-WIP1. COMPLETED INSTALLING ALL REPAIR IAW EA 22-157-01405-WIP1. ACCOMPLISHED LEAK CHECK; NO DEFECTS NOTED IAW AMM 28-11-00-400-801. NO LEAKS NOTED. TOP COATED AREA IAW AMM 51-21-73.