What was found
CORROSION ON SUBTHRESHOLD WEB AT AFT CARGO BAY BS796 - BS847 RBL 26. MARKED. / [01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 800 REMOVED 0.015' IN A AREA OF 1'X1' ORIGINAL THICKNESS 0.045' FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1 USING ATS TOOL ID ATS2678 EXP 4/2023;[02] VERIFIED CORRECTIVE ACTION 1.;[03] REMOVED ACB SUBTHRESHOLD WEB AT BS787+7 - BS847; RBL26 PER SRM 51-40-02-0G-0;[04] LOCATED AND DRILLED NEW ACB SUBTHRESHOLD WEB BS790-BS847 RBL 26 PER SRM 51-40-05-0G-0 AND DWG 146A8340 AND DWG 146A8120.<BR>OK TO INSTALL;[05] VERIFIED CORRECTIVE ACTION 4.;[06] INSTALLED SUBTHRESHOLD WEB BS790-BS847 RBL 26 PER SRM 51-40-02-0G-0 AND DWG 146A8340 AND DWG 146A8120.;[07] ALL STEPS VERIFIED;[08] VERIFIED CORRECTIVE ACTIONS 6 AND 7.