What was found
IAH - FLIGHT 2354, THE CREW REPORTED A VERY STRONG ODOR COMING FROM PACK 2 IN FLIGHT, AND THE INABILITY TO DUPLICATE ON THE GROUND. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT WHERE MAINTENANCE PERFORMED NR 1 & NR 2 ENGINE GROUND RUNS AT VARIOUS CONFIGURATIONS, INSPECTED THE AIRCRAFT ALL WITH NO SMELL OR DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.