What was found
EWR - FLIGHT 4148, THE CREW REPORTED THAT DURING THE IN-FLIGHT PORTION OF THE ICE TEST THE CABIN BEGAN TO FILL WITH SMOKE AND A STRONG ODOR. THE AIRCRAFT LANDED AT EWR WITHOUT INCIDENT WHERE MAINTENANCE PLACED THE NUMBER TWO RECIRCULATION FAN ON MEL 21-24-01 CONTROL NR 007600, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. THE AIRCRAFT LANDED AT IAH ON 03/03/01 WHERE MAINTENANCE REMOVED AND REPLACED THE NUMBER TWO RECIRCULATION FAN, REMOVED THE MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.