What was found
FLIGHT 3752, AFTER TAKEOFF THE CREW NOTED A/S OVERSPEED WARNING ON DEPARTURE, AIR RETURN TO IAH AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 1 AIR DATA COMPUTER, PERFORMED A OPERATIONAL CHECK, AND, A LEAK RATE CHECK, NO DEFECTS NOTED AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.