As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PERFORM PHASED ARRAY INSPECTION OF LT WING, FOUND EVIDENCE OF CORROSION AT RIBS 17-18. ALL CORROSION WAS REMOVED BY BLENDING WITH MINIMUM DEPTH REPORTED AS 3.90 MM AT L1 AND 3.62 MM AT L2, NORMAL THICKNESS IS 5.0MM. ALL REPAIR PLATES WERE MANUFACTURED AND INSTALLED WITH OVERSIZE FASTENER. REINSPECT.