As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - DURING PREFLIGHT INSPECTION THE CREW REPORTED A STRONG FUEL SMELL WHEN OPERATING PACKS OFF OF APU. MAINTENANCE INSPECTED THE AIRCRAFT AND PLACED THE APU ON MEL 49-00-00, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. ON 11/26/09, MAINTENANCE REMOVED AND REPLACED THE APU FUEL SOLENOID VALVE, OPERATIONALLY TESTED WITH THE FUEL SMELL STILL REMAINING IN THE COCKPIT. ON 11-27-09, MAINTENANCE OPERATIONALLY TESTED THE PACKS WITH THE APU MULTIPLE TIMES WITH NO FUEL SMELL NOTED. REMOVED THE MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.