What was found
ACB INTERCOSTAL AT BS767-BS787 CORRODED TOP AND I/B SURFACES. RBL20; BS767+4.5' TO 7'; BS767+18' / [01] REMOVED CORROSION FROM ACB INTERCOSTAL AT BS767-787 RBL20 MEASURED 3.3'L X 1.9'W AND 0.007' DEEP; ORIGINAL THICKNESS OF 0.063' FOUND OUT OF LIMITS PER SRM 53-60-15-1A-1<BR><BR>CAL ID<BR>ATS2677<BR>S/N UNKNOWN<BR>11/2021<BR>11/2022;[02] REMOVED CORROSION FROM ACB INTERCOSTAL AT BS767-787 RBL20 MEASURED 3.3'L X 1.9'W AND 0.007' DEEP; ORIGINAL THICKNESS OF 0.063' FOUND OUT OF LIMITS PER SRM 53-60-15-1A-1;[03] VERIFIED ACTION 1;2;[04] REMOVED ACB INTERCOSTAL AT BS767-787 RBL20 IAW SRM 51-40-02;[05] LOCATED AND DRILLED NEW ACB INTERCOSTAL AT BS767-787 RBL20 IAW SRM 51-40-05; BOEING DWG 146A8123 AND BOEING DWG 146A0081. OK TO INSTALL;[06] INSPECTED ACTION 5; OK TO INSTALL;[07] INSTALLED ACB INTERCOSTAL AT BS767-787 RBL20 IAW SRM 51-40-02; BOEING DWG 146A8123 AND BOEING DWG 146A008.;[08] VERIFIED CORRECTIVE ACTION STEP 7.;[09] COMPLETE