As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KMCN - DURING C-CHECK, FOUND FRAME CORRODED WHERE NUTPLATES WERE MISSING F/S 1100 ABOVE LONGERON 33 LEFT LOWER SIDE OF UPPER FLANGE. REMOVED DAMAGED PORTION OF FLANGE, FABRICATED REPAIR DOUBLER AND FILLERS AND INSTALLED IAW DER APPROVED ENGINEERING SKETCH A37-R03 AND DC8 SRM 51-1-20. (X)