As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT WING OVERWING FILL PORT FAILED BONDING CHECK BETWEEN ADAPTER AND UPPER SKIN. REMOVED FILL PORT. REMOVED CORROSION ON MATING SURFACE IAW SRM 57-20-01 FIG10. HFEC INSPECTION IAW NDTM PT6 51-00-19, NO CRACKS OR CORROSION. FPI PER SOPM 20-20-02 NO CORROSION. COMPLIED WITH ER/A 498907-14AD REV ORIG.