As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, FOUND LEFT WING UPPER SKIN HAS SEVERAL SPOTS WITH CORROSION BETWEEN FRONT SPAR AND CENTER SPAR BETWEEN XRS 238.000 AND XRS 255.000. REMOVED CORROSION, FOUND BEYOND LIMITS. FABRICATED DOUBLERS AND INSTALLED IAW DER NR 961ALE005 D-5.