What was found
CORROSION ON FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS727C - BS767 RBL21. / [01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 747 REMOVED 0.015' IN A AREA OF 1'X1' ORIGINAL THICKNESS 0.040' FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING ATS TOOL ID ATS1225;[02] VERIFIED CORRECTIVE ACTION 1;[03] LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT AT BS727-767 RBL21 IAW SRM 51-40-05-0G-0 AND DWG 146A7500.;[04] VERIFIED ALL STEPS;[05] VERIFIED CORRECTIVE ACTION 3. WORKSCOPE COMPLETE