What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK A 1.5 PERCENT CRACK WAS FOUND ON INBOARD RADIUS OF BS 178 BULKHEAD VERTICAL WEB AT LBL 5.7, WL 186. MAINTENANCE CUT OUT DAMAGED SECTION OF BS 178 BULKHEAD VERTICAL WEB AT LBL 5.7, WL 186; PERFORMED HFEC INSPECTION OF CUTOUT TO VERIFY AND NO CRACKS EXIST. FABRICATED A FILLER, 4 EACH REPAIR ANGLES, AND 2 EACH STRAPS; INSTALLED REPAIR PARTS IAW B737-300 SRM 53-10-08, PG 221-240, FIG 205.