What was found
MAIN CABIN FWD WET AREA INTERCOSTAL BETWEEN STA 328 AND STA 344 LBL 34' CRACKED ; MAIN CABIN FWD WET AREA INTERCOSTAL BETWEEN STA 328 AND STA 344 LBL 46' CRACKED / [01] REMOVED AT MAIN CABIN WET AREA INTERCOSTAL BETWEEN STA 328 344LBL 46' IAW B737-7 SRM 51-40-02-0G-0.; [02] VERIFIED STEP 1 OK TO INSTALL INTERCOSTAL; [03] INSTALLED NEW INTERCOSTAL AT MAIN CABIN BETWEEN STA. 328 & 344; LBL 46 AS PER B737-7 SRM 51-40-02-0G-0 & DWG 141A5400.; [04] VERIFIED STEP 3