As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING EXTERNAL WALKAROUND, FOUND RT UNDERWING REFUEL CAP-COUPLING MISSING. PREVIOUSLY INSTALLED REFUEL CAP-COUPLING IS PDA2 AND PART LOCATION IS UNKNOWN AT THIS TIME. INSTALLED SERVICEABLE UNDERWING REFUEL CAP-COUPLING IAW AMM 28-25-41. PART SECURED TO ACFT.