As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-1 CHECK INSPECTION, FOUND LEFT HAND WING LEADING EDGE UPPER SURFACE STA XFS100 TO XFS141. CORROSION REMOVAL EXCEEDED LIMITS. REPAIRED LEADING EDGE UPPER SURFACE STA XFS100 TO XFS141 IAW AIA SKETCH AIA/E/2419 REFERENCE M-40 NR 90811. CORROSION CARD NR 116L-0551. NON-ROUTINE TASK CARD NR 90770, LEVEL 2.