What was found
MAIN CABIN AFT SHEAR WEB BS 1720 BETWEEN LBL 60 TO RBL 60 SUPPORT CORRODED AT RBL 56, PARTS RACK, CP 53-252-01. R & R MAIN CABIN AFT SHEAR WEB , BS 1720, LBL 60-RBL 60, IAW ENGINE DWG 146N5300, REV, SRM 51-40-01, SRM 51-40-02, SRM 51-40-04, SRM 51-40-05, AND SRM 53-00-51.