As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-13 CHECK A 3/4" CRACK WAS FOUND ON THE AFT CARGO DOOR FORWARD FRAME AT BS 794, WL 167, RBL 44. MAINTENANCE STOP DRILLED THE CRACK AND PERFORMED A HFEC INSPECTION TO VERIFY THE CRACK WAS CONTAINED. FABRICATED A DOUBLER, 2 EACH SUPPORT TEE'S, 2 EACH RADIUS FILLERS, AND INSTALLED REPAIR PARTS IAW E.O. 53-10-01.