As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF LH WING, TRIALING EDGE, UPPER SKIN PANEL, DISCOVERED THE FORWARD LAND AT REAR SPAR HAD CORROSION. STARTED REMOVAL OF CORROSION AT T/E OF LEFT WING UPPER SKIN PANEL, BETWEEN WS 150-180 & WS 194.5 IAW SRM 57-20-01-1A. FOUND CORROSION EXTENDS FWD INTO AFT SPAR FASTENERS IN FUEL TANK. COMPLIED WITH E.A. F-5700-T0364606 PART 1 AND PART 2 WING-GENERAL-CORROSION FOUND ON 112N3101-11 WING SKIN TRAILING EDGE.