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 CRACK WAS FOUND ON PRESSURE BULKHEAD CHORD BS 178 AT THE LT SIDE 12.5 INCHES BELOW WL 208. MAINTENANCE REMOVED DAMAGED CHORD AT LT SIDE BS 178, WL 196; FABRICATED NEW CHORD AND INSTALLED REPAIR IAW B737-200 SRM 51-10-1, PG 8, AND DWG 65-16300.