What was found
IAH - FLIGHT 2117, THE CREW REPORTED AN ELECTRICAL SMELL NOTED DURING CRUISE FOR APPROXIMATELY THREE MINUTES. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT WHERE MAINTENANCE INSPECTED THE AIRCRAFT, PERFORMED GROUND RUNS, PRESSURIZED THE AIRCRAFT, ACTIVATED MULTIPLE SYSTEMS ALL WITH NO DEFECTS NOTED, AND UNABLE TO DUPLICATE THE DISCREPANCY. THE AIRCRAFT WAS SUBSEQUENTLY APPROVED FOR RETURN TO SERVICE.