What was found
DURING C CHECK AMES TAMPA REPORTED CORROSION ON THE LEFT WING LOWER SKIN PANEL NO. 4 TOP SURFACE AT WING STATION 314.4 AND STRINGER 16L. CORROSION WAS ALSO NOTED AT TOP SURFACE OF TANK ACCESS PANEL FLANGE. THE DAMAGE WAS REMOVED IAW 767-200 SRM 51-10-02 AND UT INSPECTION WAS PERFORMED TO DETERMINE THE REMAINING THICKNESS, AND FOUND TO BE OUT OFF LIMITS IAW 767-200 SRM 57-20-01. BOEING WAS CONTACTED VIA SR#4-5742615444, AND PERMANENT REPAIR INSTRUCTIONS WERE PROVIDED. REPAIRED PER ABX-REA-5725-64905-01. VENDOR DID NOT REPORT REPAIR TO ABX AIR. THIS WAS DICOVERED BY AN FAA AUDIT OF THE VENDOR