As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 5C-CHECK AND INPS CORROSION WAS FOUND ON RT AND LT WING FRONT SPAR CHORD PLATE LWR SURFACE. AFTER BLEND OUT THE MAX LOSS OF MATERIAL THICKNESS WAS BEYOND THE ALLOWABLE LIMIT IAW SRM. FABRICATED AN INTERNAL REPAIR STRAP IAW EI-727-090701 HFEC ACCESSED FASTENER AND BLEND OUT AREA.