As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 4277 FROM OMA TO IAH, THE CREW REPORTED A STRONG FUEL SMELL IN THE COCKPIT AND CABIN AFTER STARTING THE APU IN FLIGHT. THE AIRCRAFT CONTINUED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED AN OPERATION CK ON THE APU, AND BOTH PACKS WITH NO DEFECTS NOTED. THE AIRCRAFT WAS THEN APPROVED FOR RETURN TO SERVICE.