As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YVR - MAJOR REPAIR - DURING C-20 CHECK A .75 INCH CRACK WAS FOUND ON INTERCOSTAL BS 294, STR 15 LT. MAINTENANCE REMOVED CRACKED INTERCOSTAL AT BS 294, STR 15 LT. FABRICATED A NEW INTERCOSTAL AND INSTALLED REPAIR IAW DWG 65-17684 AND B737-200 SRM 51-10-01 PG 8.