As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE FUEL CAP MISSING ON CLIMBOUT. CREW ELECTED TO RETURN TO TLH AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND MEL'D THE FUEL CAP. MAINTENANCE IN CLT REPLACED THE MISSING FUEL CAP, MEL WAS CLEARED. AIRCRAFT WAS RELEASED FOR SERVICE.