What was found
MAIN CABIN CENTER WING FLOOR SUPPORT BREAK CRACKED @ FASTENER TAIL RBL-1 ; STA 540 MKD DOT ; / [01] REMOVED MAIN CABIN CENTER WING FLOOR SUPPORT BRACKET RBL-1 STA 540. IAW B 737-7 SRM 51-40-02.; [02] LOCATED AND DRILLED NEW FLOOR SUPPORT. IAW B 737-7 SRM 51-40-05.; [03] VERIFIED STEPS 1 AND 2.; [04] OK TO INSTALL BREAK ASSY; [05] REMOVED AND INSTALLED NEW BREAK ASSY AT MAIN CABIN CENTER WING RBL-1 STA 540 REF B 737-7 SRM 51-40-02 AND DWG #143A5240; [06] VERIFIED STEP 5; [07] VERIFIED STEP 5