What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK MULTIPLE CRACKS (8 EACH) WERE FOUND ON BULKHEAD BS 178 AT LBL 1.25 AND RBL 1.5 WL 206, LBL 11 AND RBL 11 WL 213, LBL 4.7 WL 198 & 201, RBL 4.7 WL 198 & 210. MAINTENANCE CUTOUT DAMAGE ON WEB BS 178 AT LBL 1.25 AND RBL 1.5 WL 206, LBL 11 AND RBL 11 WL 213, LBL 4.7 WL 198 & 201, RBL 4.7 WL 198 & 210; PERFORMED HFEC INSPECTION OF CUTOUT AREAS TO VERIFY NO CRACKS EXIST; FABRICATED A REPAIR DOUBLER AND 3 EACH FILLERS; INSTALLED REPAIR PARTS IAW B737-300 SRM 53-10-08, FIG. 211, PG. 287-288D.