What was found
MAIN CABIN CENTER WING BOX FLOOR SUOOPRT BREAK CRACKED @ STA 540 RBL 1 MKD DOT / [01] REMOVED FLOOR SUPPORT IAW SRM 51-40-02-0G-0;[02] CORRECTION TO STEP 1; REMOVED FLOOR SUPPORT AT MAIN CABIN CENTER WING BOX ON STA 540 RBL 1 PER B737-700 SRM 51-40-02-0G-0.;[03] ADD TO STEP 2: FLOOR SUPPORT BREAK.;[04] VERIFIED REMOVED FLOOR SUPPORT BREAK. (STEP 2 WITH CORRECTION 3). OK TO INSTALL NEW SUPPORT BREAK;[05] INSTALLED NEW SUPPORT BREAK AT MAIN CABIN CENTER WING BOX ON STA 540 RBL 1 PER B737-700 SRM 51-40-02-0G-0.;[06] VERIFIED 5