As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JUST AFTER TAKEOFF, SMELLED FUEL THROUGHOUT THE CABIN. IMMEDIATELY ABORTED THE FLIGHT AND RETURNED TO BASE. PERFORMED A THOROUGH INSPECTION OF ACFT, NO DEFECTS WERE NOTED. THE FUEL ODOR COULD NOT BE DUPLICATED AND THE ACFT WAS RETURNED TO SERVICE.