As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE THE CREW REPORTED ON APPROACH THE APU FAILED DURING START UP AND A FUEL SMELL WAS NOTED. ON THE GROUND THE APU DID START AND THE FUEL ODOR WAS PRESENT AGAIN. MAINTENANCE INSPECTED AND CLEANED THE APU COMBUSTER DRAIN CHECK VALVE. OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.