What was found
FWD CABIN WET AREA FLOOR SUPPORT INTERCOSTAL CRACKED @ FWD FASTENER HOLE RBL 33 BETWEEN STA 312 AND 328 ; / [01] REMOVED FLOOR SUPPORT INTERCOSTAL RBL 33 BETWEEN STA 312 AND 328 INREF. B-737 700 SRM 51-40-02-0G; [02] LOCATED AND DRILLED NEW INTERCOSTAL P/N 141A5410U12 AS PER SRM 51-40-05-0G-0.; [03] VERIFIED. STEPS 1 AND 2; [04] RII OK TO INSTALL NEW INTERCOSTAL; [05] REMOVED AND REPLACED INTERCOSTAL P/N 141A5410U12 AT MAIN CABIN RBL 33 BETWEEN STA 312 AND 328 AS PER SRM 51-40-02-0G-0 AND DWG 141A5400; [06] VERIFIED STEP # 5.