What was found
IAH - FLIGHT 2025, THE CREW REPORTED THAT THE APU CAUSES FUEL SMELL IN THE CABIN. MAINTENANCE PLACED THE APU ON MEL49-00-00 CTL 136251, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. MAINTENANCE R &R THE APU SERVO BLEED VALVE, OPERATIONALLY CHECKED WITH NO DEFECTS, REMOVED THE MEL, AND TEH AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.