What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK A 2" CRACK WAS FOUND ON WEB AT RIVET HOLE BS 178, WL 234, LBL 9. MAINTENANCE BLENDED OUT DAMAGE AT BS 178, WL 234, LBL 9, AND PERFORMED A HFEC INSPECTION TO VERIFY NO CRACKS EXIST. FABRICATED A REPAIR DOUBLER AND FILLER, AND INSTALLED REPAIR PARTS IAW B737-300 SRM 53-10-08, FIG. 209, PG. 265-269.