What was found
B/S 312 TO 328 LEFT BUT LINE 47 INTERCOSTAL IS CRACKED / [01] INSTALLED EWIS PROTECTION AT AREA B/S 312 TO 328 LEFT BUT LINE 47 IN REF AMM 20-60-07-913-801;[02] REMOVED INTERCOSTAL AT MAIN CABIN FLOOR STRUCTURE FS 312-328 LBL 47' IN REF SRM 51-40-02-0G-0;[03] LOCATED AND DRILLED NEW INTERCOSTAL AT MAIN CABIN FLOOR STRUCTURE FS 312-328 LBL 47' IN REF SRM 51-40-05-0G-0;[04] VERIFIED STEPS 1; 2 AND 3 OK TO TREAT AND PRIME HOLES;[05] TREATED AND APPLIED PRIMER AT NEW INTERCOSTAL IN REF SRM 51-40-02-0G-0;[06] VERIFIED STEP 5;[07] OK TO INSTALL INTERCOSTAL;[08] INSTALLED NEW INTERCOSTAL AT MAIN CABIN FLOOR STRUCTURE FS 312-328 LBL 47' IN REF SRM 51-40-02-0G-0 AND DW # 143A5400;[09] VERIFIED STEP 8;[10] OK TO REMOVE EWIS;[11] REMOVED EWIS PROTECTION AT AREA B/S 312 TO 328 LEFT BUT LINE 47 IN REF AMM 20-60-07-913-801;[12] INSTALLED EWIS PROTECTION AT AREA B/S 312 TO 328 LEFT BUT LINE 47 IN REF AMM 20-60-07-913-801;REMOVED INTERCOSTAL AT MAIN CABIN FLOOR STRUCTURE FS 312-328 LBL 47' IN REF SRM 51-40-02-0G-0;LOCATED AND DRILLED NEW INTERCOSTAL AT MAIN CABIN FLOOR STRUCTURE FS 312-328 LBL 47' IN REF SRM 51-40-05-0G-0;INSTALLED NEW INTERCOSTAL AT MAIN CABIN FLOOR STRUCTURE FS 312-328 LBL 47' IN REF SRM 51-40-02-0G-0 AND DW # 143A5400 AND REMOVED EWIS PROTECTION AT AREA B/S 312 TO 328 LEFT BUT LINE 47 IN REF AMM 20-60-07-913-801;[13] VERIFIED STEP 11 AND 12