As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-17 CHECK A 1 INCH CRACK WAS FOUND ON LT WING AFT RIB, WBL 135.5. MAINTENANCE CUT OUT CRACKED LT WING AFT RIB AT WBL 135.5; PERFORMED A HFEC INSPECTION TO VERIFY NO CRACKS EXIST; FABRICATED A NEW SECTION OF RIB AND 2 EACH REPAIR ANGLES; INSTALLED REPAIR PARTS IAW AWA ER 03-5723-03149-TB1.