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 1/4" CRACK WAS FOUND ON FRAME AT BS 312, BETWEEN STR 5 - STR 6 L/H. MAINTENANCE STOP DRILLED CRACK AT BS 312, BETWEEN STR 5 - STR 6 L/H; PERFORMED A HFEC INSPECTION TO VERIFY CRACK WAS CONTAINED; FABRICATED A FRAME REPAIR DOUBLER; AND INSTALLED REPAIR PART IAW B737-200 SRM 51-40-3, FIG. 1.