What was found
YVR - MAJOR REPAIR - DURING C-14 CHECK A 3" CRACK WAS FOUND COMING FROM THE ANCHOR NUT HOLE AT FS 460 L/H, STR 21 INBOARD CHORD IN THE FORWARD CARGO COMPARTMENT. MAINTENANCE REMOVED DAMAGED LOWER SECTION OF FRAME, FABRICATED A NEW LOWER SECTION OF FRAME AND SPLICE DOUBLER, AND INSTALLED REPAIR PARTS IAW B737-200 SRM 51-10-1, PG 8, AND SRM 51-40-3, FIG. 1, PG. 1-6.