As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT IB FLAP VANE, UPPER SKIN CORRODED BEYOND LIMITS. POSSIBLE CAUSE: DISSIMILAR METAL CORROSION AS TRAILING EDGE IS MAGNESIUM AND SKIN IS ALUMINUM OR ENVIRONMENT IN WHICH THE VANE OPERATES. IT IS LOCATED BEHIND THE MLG. ASSURE THE SKIN IS PROPERLY TREATED IAW CORROSION PREVENTION PROCEDURES AND PAINTED WITH EPOXY PRIMER BEFORE INSTALLATION. (K)