What was found
FWD CABIN BETWEEN STA 344 AND STA 360 WL 208.1 INTERCOSTAL AT BL 0 IS CRACKED AS MARKED. 124-057 / [01] INSTALLED EWIS PROTECTION AT REPAIR AREA AS PER B-737-700 AMM.20-60-07-913-801;[02] REMOVED DAMAGE INTERCOSTAL AT FWD. CABIN BETWEEN STA. 344 TO 366 BL 0;[03] LOCATED AND DRILLED NEW INTERCOSTAL AT FWD. CABIN BETWEEN STA. 344 AND 360 BL 0 AS PER B-737-700 SRM. 51-40-05-0G-0;[04] VERIFIED 1-3. OK TO INSTALL NEW INTERCOSTAL.;[05] INSTALLED INTERCOSTAL AT FWD. CABIN BETWEEN STA. 344 AND STA. 366 AT BL 0 IAW B737-700 SRM 51-40-02-0G-0;[06] FINAL REMOVED AND INSTALLED NEW INTERCOSTAL AT FWD. CABIN BETWEEN STA. 344 AND STA. 366 AT BL 0 IAW B737-700 SRM 51-40-02-0G-0;[07] (LATE ENTRY) REMOVED EWIS PROTECTION AT REPAIR AREA AS PER B737-700 AMM 20-60-07-913-801.;[08] VERIFIED AND INSPECTED STEP#5; #6 AND #7.;[09] INSPECTED.;[10] (AMENDING STEP 5) INSTALLED INTERCOSTAL AT FWD. CABIN BETWEEN STA. 344 AND STA. 366 AT BL 0 IAW B737-700 SRM 51-40-02-0G-0 AND DWG #141A5400.