What was found
CORROSION ON AFT CARGO BAY THRESHOLD AT RBL 26 BS 787+8; BS 787+17; BS 807+3; BS 807+14; BS 807+19; BS 827+4; BS 827+11. EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 787+17' 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; VERIFIED CORRECTIVE ACTION STEP 1. REMOVED SUB THRESHOLD WEB PER SRM 51-40-02-0G-0;[04] LOCATED AND DRILLED NEW THRESHOLD WEB BS 792 TO 847 RBL 26 PER SRM 51-40-05-0G-0 AND DWG 146A8340. OK TO INSTALL INSTALLED NEW THRESHOLD WEB BS 792 TO 847 RBL 26 PER SRM 51-40-02-0G-0 AND DWG 146A8340.