As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6409 JFK-SAL, ON HEAVY MAINTENANCE CHECK FOUND RIGHT WING TRAILING EDGE TOP SKIN PANEL 2 AT RIB 14 CORRODED. ACCOMPLISHED REPAIR OF THE RT WING BOX MAIN STRUCTURE SKINS AND PLATING TOP SKIN PANEL 2 TRAILING EDGE OVERHANG CORROSION SPOTS IN ACCORDANCE WITH EC A12-336-01.