Will the brakes hold the aircraft on snow or ice covered runways with the PCL at MAX?

Will the brakes hold the aircraft on snow or ice covered runways with the PCL at MAX?

• A. Yes
• B. No
• C. Only on ice
• D. Only if the runway is treated

Answer: (B)

The brakes will typically not hold the aircraft effectively on snow or ice-covered runways with the Power Control Lever (PCL) at maximum. This is primarily due to the reduced friction between the aircraft’s tires and the slippery surface. On such conditions, the likelihood of skidding is significantly increased, making it difficult for the brakes to maintain directional control and stop the aircraft as intended. When the PCL is set to maximum, the thrust produced can exacerbate the situation, causing potential wheel slip and reduced braking efficiency. Therefore, it is crucial for pilots to exercise caution and avoid maximum thrust settings in winter conditions where snow or ice are likely present on runways. Proper techniques, such as using reduced thrust and ensuring the runway is treated, are essential for safe operations in these conditions.

The brakes will typically not hold the aircraft effectively on snow or ice-covered runways with the Power Control Lever (PCL) at maximum. This is primarily due to the reduced friction between the aircraft’s tires and the slippery surface. On such conditions, the likelihood of skidding is significantly increased, making it difficult for the brakes to maintain directional control and stop the aircraft as intended.

When the PCL is set to maximum, the thrust produced can exacerbate the situation, causing potential wheel slip and reduced braking efficiency. Therefore, it is crucial for pilots to exercise caution and avoid maximum thrust settings in winter conditions where snow or ice are likely present on runways. Proper techniques, such as using reduced thrust and ensuring the runway is treated, are essential for safe operations in these conditions.