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 2 FASTENERS CORRODED AND SURROUNDING SKIN CRACKED JUST FORWARD OF THE FRONT SPAR ON UPPER LEADING EDGE LT WS XRS 507.5 TO 509.5. REMOVED CORROSION AND CRACKS. FABRICATED AND INSTALLED REPAIR IAW DC8 SRM 51-1-20A, SRM 51-1-21, AND DER APPROVED ENGINEERING SKETCH NR A37-R01. (X)