What was found
MCN - MAJOR REPAIR - DURING C18 CHECK DISCOVERED INTERCOSTAL ANGLE CRACKED, .75 INCHES, AT BS 927, BL 0 AND WL 208. MAINTENANCE REMOVED ATTACH ANGLE AND FABRICATED ATTACH ANGLE IAW BOEING 737-300 SRM 51-40-02-0G AND DWG 65-46809. INSTALLED FABRICATED REPAIR PARTS AT BS 927, WL 208 AND BL 0 IAW BOEING 737-300 SRM 51-40-02-0G FIGS 3, 4, 6, 7, AND 8.