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-13 CHECK MAINTENANCE DISCOVERED A CRACK AT THE AFT END OF FWD CARGO DOOR LOWER TEE CHORD BETWEEN 2 FASTENERS IN THE VERTICAL LEG BS 490. MAINTENANCE CUT OUT DAMAGED AREA OF TEE CHORD AT BS 490, FABRICATED DOUBLER AND FILLER, INSTALLED REPAIR PARTS IAW EO 52-31-04.