As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REPAIR- CORROSION, LEFT LOWER FORWARD WING PANEL, XFS=129.847. THIS DOCUMENT PROVIDES REPAIR INSTRUCTIONS FOR CORROSION FOUND COMMON TO THE LOWER SURFACE OF THE LEFT WING FORWARD PANEL, (P/N 9937581-505). REPAIR IS ACCOMPLISHED BY BLENDING OUT THE CORROSION AND INSTALLING AN EXTERNAL REPAIR DOUBLER PER ECRA N12FQ-57-MD88-004-EAC.