As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5296. DURING DESCENT INTO CVG AND AFTER THE APU WAS STARTED; STRONG ODOR OF FUEL THROUGHOUT THE ENTIRE AIRCRAFT.INSPECTED FUEL SYSTEM FOR POSSIBLE LEAKS, OPERATED APU AND AIR CONDITIONING SYSTEM, DISCREPANCY COULD NOT BE DUPLCIATED BY MAINTENANCE, NO DEFECTS NOTED.