What was found
LIT - FLT 3647 - THE CREW REPORTED THAT THE LEFT MAIN LANDING GEAR WOULD NOT RETRACT. MAINTENANCE INSPECTED THE AIRCRAFT AND PLACED THE LANDING GEAR ON MEL 32-31-03 CONTROL NR 195201, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. THE AIRCRAFT LANDED AT IAH WHERE MAINTENANCE REMOVED AND REPLACED THE LEFT MAIN LANDING GEAR UPLCOK BOX MICROSWITCH IAW ATR42-500 JIC 32-61-00, CLEARED THE MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)