As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT UPPER WINGLET ASSEMBLY MISSING PAINT IS SHOWING SIGNS OF CORROSION APPROXIMATELY 0.5 INCHES WIDE BY 2.0 INCHES IN LENGTH. EVALUATED IAW SRM 57-31-00 AP37.1-0632. REMOVED CORROSION IAW SRM 51-10-02. DAMAGE DIMENSIONS ARE AS FOLLOWS; LENGTH: 2.60 INCHES; WIDTH: 0.70 INCHES; DEPTH: 0.090 INCHES. LOCATED APPROXIMATELY 3 INCHES BELOW THE WINGLET UPPER CAP ON THE INBOARD AFT EDGE. CW PER EA 25-157-02570.