Dynamic hydroplaning occurs under what specific conditions?

Dynamic hydroplaning occurs under what specific conditions?

• A. When tire pressure is low
• B. When standing water of 3mm or more is present at critical speed
• C. When the runway is icy
• D. When tires are rotating at a speed of only 30 knots

Answer: (B)

Dynamic hydroplaning occurs specifically when there is a layer of water on the runway and the aircraft reaches a critical speed, where the water is unable to be displaced by the aircraft tires. At this point, typically defined by the presence of standing water of 3mm (or approximately 1/8 inch) or more, the aircraft can lose contact with the runway surface, leading to a significant reduction in braking and control. This phenomenon is influenced by factors such as tire design, speed, and the depth of the water on the runway. The critical speed varies depending on the aircraft and its tires, but when that speed is reached with sufficient standing water, hydroplaning can occur. It’s important for pilots to understand these conditions to manage their approach and landing more safely. The factors regarding low tire pressure, icy runways, or a specific tire rotation speed of 30 knots do not necessarily represent the conditions that lead to dynamic hydroplaning in the same way as the presence of standing water at critical speeds does.

Dynamic hydroplaning occurs specifically when there is a layer of water on the runway and the aircraft reaches a critical speed, where the water is unable to be displaced by the aircraft tires. At this point, typically defined by the presence of standing water of 3mm (or approximately 1/8 inch) or more, the aircraft can lose contact with the runway surface, leading to a significant reduction in braking and control. This phenomenon is influenced by factors such as tire design, speed, and the depth of the water on the runway.

The critical speed varies depending on the aircraft and its tires, but when that speed is reached with sufficient standing water, hydroplaning can occur. It’s important for pilots to understand these conditions to manage their approach and landing more safely. The factors regarding low tire pressure, icy runways, or a specific tire rotation speed of 30 knots do not necessarily represent the conditions that lead to dynamic hydroplaning in the same way as the presence of standing water at critical speeds does.