FAA Aircraft Dispatcher Practice Exam

What is the primary hazard of operating an aircraft with inoperative ice protection systems?

1. Increased drag

2. Altered flight dynamics

3. Reduced power output

4. Loss of control

The correct answer is: Loss of control

Operating an aircraft with inoperative ice protection systems significantly heightens the risk of loss of control. Ice accumulation on the wings, tail, and control surfaces can drastically alter the aircraft's aerodynamic characteristics, leading to unexpected and potentially dangerous changes in handling. As ice builds up, it can disrupt airflow over the wings and control surfaces, impairing lift generation and increasing drag. These changes can make the aircraft increasingly difficult to control, especially during critical phases of flight such as takeoff and landing or in turns. While increased drag, altered flight dynamics, and reduced power output are all valid concerns associated with ice accumulation, the most critical threat is the potential for loss of control. Controlling the aircraft becomes more challenging when it is hindered by ice, requiring precise maneuvering to maintain flight stability, which may not be achievable if adequate ice protection is not operational. Therefore, the primary hazard centers around the loss of control due to the compromised aerodynamic performance of the aircraft.