What was found
FLOOR BEAM STA. 328 RBL HAS CORROSION. FS 328, BL RBL 20, WL 208. GROUNDED - YES. BLENDED CORROSION. ORIG THICKNESS 0.125 IAW B737-900ER SRM 53-10-51-0I-2 AND BAC 1518-1210. REMOVED 0.085, REMAINING THICK 0.040. OUT OF LIMITS IAW B737-900ER SRM 53-10-51-1A-1. CUT OUT DAMAGE RBL1 TO RBL 64 ON FLOOR BEAM. CUT INTERCOSTAL STA 328-STA 344 RBL25 FOR REPAIR. FABBED "T" CHORD SECTION, REPAIR ANGLES, SHIMS AND FILLERS IAW B737-900ER SRM 53-10-51-2R-7 ALTERNATIVE 2. ALODINE IAW B737-900ER SRM 51-20-01. LBL12-RBL64. PRIMED IAW BOEING SOPM 20-41-02 LBL12-RBL64. INSTALLED REPAIR "T" CHORD SECTION, REPAIR ANGLES, SHIMS AND FILLERS IAW B737-900ER SRM 53-10-51-2R-7 ALTERNATIVE 2.