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 A 1/4" CRACK WAS FOUND ON DOUBLER FOR PYLON ACCESS PANEL 5727L AT NAC 216. MAINTENANCE PERFORMED HFEC INSPECTION TO IDENTIFY END OF CRACK THEN STOP DRILLED CRACK; FABRICATED REPAIR DOUBLER AND INSTALLED REPAIR IAW AWA ER 03-5433-00340-DL1