What was found
GYR - DISCOVERED, DURING C20 CHECK, INTERCOSTAL AT STA 294.5, STR 16L, FORWARD END, CRACKED 1.0 INCHES IN LENGTH. MAINTENANCE REMOVED DAMAGED INTERCOSTAL IAW BOEING 737-300 SRM 51-40-02-0G. FABRICATED NEW INTERCOSTAL IAW BOEING 737-300 DWG 65-17684 AND SRM 51-30-01. INSTALLED FABRICATED REPAIR PARTS AT STA 294.5, STR 16L IAW BOEING 737-300 SRM 51-40-02-0G.