What was found
FORWARD CABIN FLOOR STRUCTURE; STA 305; LBL11; WL208; INTERCOSTAL FLOOR SUPPORT UPPER SURFACE; 2 EA SPOTS OF CORROSION; MRK'D IN RED. REMOVED CORROSION AT FWD CABIN FLOOR STRUCTURE STA 305 LBL11 INTERCOSTAL FLOOR SUPPORT IAW B737 SRM 51-10-02-0G-0 AND 53-10-51-1A-1. EVALUATED DAMAGE AS 100% MATERIAL LOSS DUE TO CORROSION INTERCOSTAL FLOOR SUPPORT IS OUT OF LIMITS IAW B737 SRM 53-10-15-1A-1. REMOVED AND REPLACED INTERCOSTAL IAW B737 SRM 51-40-02-0G-0 AND DWG 141A5600 REV PN 141A5690-1.