What was found
***CORROSION*** ON INTERCOSTAL AT AFT CARGO BAY BS727A+18 RBL3 WL150 ; / INSTALLED NEW INTERCOSTAL IN ACB BS727A+18 RBL3 WL150 IAW SRM 51-40-02 AND DWG #146A7510.;LOCATED; DRILLED; DEBURRED; AND APPLIED CHEMICAL CONVERSION COATING IAW SRM 51-40-05 AND DWG #146A7510.;PRIMERED NEW INTERCOSTAL @ BS727A+18 RBL3 WL150 IAW SRM 51-20-01-0G-0. OK TO INSTALL.;RECEIVED NEW INTERCOSTAL FOR ACB BS727A+18 RBL3 WL150 FROM OSS PO#824713-SWA.;REMOVED INTERCOSTAL IN ACB BS727A+18 RBL3 WL150 IAW SRM 51-40-02.;VERIFIED MEASUREMENT TABLE; INTERCOSTAL FOUND TO BE OUT OF LIMITS AND REPLACEMENT PART PER SRM 51-10-02-0G;EVALUATED CORROSION ON INTERCOSTAL BS727A+18 RBL3 WL150 FOUND TO BE OUT OF LIMITS DUE TO NO ALLOWABLE LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0;UPDATED MEASUREMENT TABLE;VERIFIED RECEIVED NEW INTERCOSTAL FOR ACB BS727A+18 RBL3 WL150 FROM OSS PO#824713-SWA. AND VERIFIED LOCATED; DRILLED; DEBURRED; AND APPLIED CHEMICAL CONVERSION COATING IAW SRM 51-40-05 AND DWG #146A7510. VERIFIED APPLICATION OF PRIMER AND OK TO INSTALL;VERIFIED INSTALL OF NEW INTERCOSTAL IN ACB BS727A+18 RBL3 WL150 IAW SRM 51-40-02 AND DWG #146A7510.