What was found
YVR - MAJOR REPAIR - DURING C-20 CHECK A CRACK WAS FOUND ON FRAME AT BS 303.9, STR 16 L/H. MAINTENANCE REMOVED DAMAGED AREA, FABRICATED A FILLER AND 2 EACH REPAIR DOUBLERS, AND INSTALLED REPAIR PARTS IAW B737-200 SRM 51-40-2, FIG. 1, PG. 1.