What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK A 3 INCH CRACK WAS FOUND IN FUSELAGE SKIN AT BS 727D + 17 INCHES, STR 24 RT. MAINTENANCE CUTOUT CRACKED SECTION OF FUSELAGE SKIN AT BS 727D + 17 INCH, STR 24 RT; FABRICATED A FILLER, DOUBLER AND TRIPLER; INSTALLED REPAIR PARTS IAW B737-300 SRM 53-00-01, FIG 229.