Lite Machines Corporation, of West Lafayette, Ind.

The Fusion 35 motor speed controller may not operate properly, due to a weakness in a batch of integrated circuit (IC) chips. The (IC) chip can become hot and damage the controller. In certain instances, a malfunctioning IC chip can cause the helicopter motor to turn on for the several seconds before the power is disconnected, which can damage the helicopter or cause injury to the operator or bystanders.