As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF TASK CARD 57-710-00-01, CORROSION WAS NOTED ON THE CONDUCTIVE STRIP OF THE LEFT WINGLET TRAILING EDGE WEDGE. ACCOMPLISHED REPAIR IN ACCORDANCE WITH FLIGHT VEHICLES CONSULTING INC. ENGINEERING ORDER NUMBERS 20315 AND 20315-1.