What was found
FS 461.00 RBL 9.00 INTERCOSTAL ATTACH FITTING CRACKED IN AFT UPPER RADIUS. REMOVED INTERCOSTAL BETWEEN RBL9 AND RBL18 AT FS 461.00, REMOVED INTERCOSTAL ATTACHMENT FITTING AT FS 461.00 ON RBL9 FRAME, AND DRILLED NEW FITTING OK TO INSTALL IAW SRM 51-42-21. INSTALLED FASTENERS COMMON TO SIDE OF RBL 9.00 IN INTERCOSTAL ATTACH FITTING IAW SRM 51-42-20 AND DWG 600-31068 INSTALLED 10 FASTENERS COMMON TO PRESSURE FLOOR IAW REO 601R-53-41-1252. INSTALLED INTERCOSTAL BETWEEN RBL 9 AND RBL 18 IAW SRM 51-42-21.