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-15 CHECK A .25 INCH CRACK WAS FOUND AT L-1 DOOR ON THE AFT EDGE OF THE CENTER DOOR STOP ACCESS HOLE. MAINTENANCE STOP DRILLED CRACK AND PERFORMED HFEC TO VERIFY CRACK WAS CONTAINED; FABRICATED A REPAIR DOUBLER; INSTALLED REPAIR PART IAW B737-200 SRM 51-40-2, FIG 1.