As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THE SMELL OF RAW JET FUEL IN THE CABIN IN FLIGHT AND ELECTED TO ABORT THE FLIGHT AND RETURN TO BASE. MAINTNENANCE ARRIVED AND INSPECTED ALL FUEL LINES AND FITTINGS, HMU, AND FUEL PUMP. PERFORMED GROUND RUN WITH AIR CONDITIONING AND HEATING SYSTEMS TURNED ON AND OFF. UNABLE TO FINE ANY EVIDENCE OF A FUEL LEAK OR SMELL IN THE CABIN.