As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - "C" - DURING C-17 CHECK 1/4" CRACK WAS FOUND AT 12 OCLOCK POSITION AT HILOC FASTENER HOLE LOWER AFT CORNER OF L1 DOOR CUTOUT BS 340. MAINTENANCE REMOVED DAMAGED AREA OF SKIN AND PERFORMED HFEC INSPECTION TO VERIFY CRACK WAS CONTAINED, FABRICATED DOUBLER AND STRAP AND INSTALLED REPAIRS IAW AWA ER 03-5311-02014-SS2.