For takeoff and landing performance, a damp runway is considered to be which type of runway?

For takeoff and landing performance, a damp runway is considered to be which type of runway?

• A. Dry runway
• B. Wet runway
• C. Contaminated runway
• D. Icy runway

Answer: (A)

When evaluating takeoff and landing performance, the amount of moisture on the runway changes the friction and how far the airplane may need to accelerate or decelerate. In this question’s framework, a damp runway is treated as a dry runway for performance calculations. That means the braking and acceleration characteristics used for planning are the same as those for a dry surface, because the moisture isn’t judged to be enough to significantly alter friction or risk hydroplaning. So the best choice is that a damp runway is considered a dry runway because, for these charts and training materials, the moisture level is not sufficient to shift the performance data away from the dry baseline. In real operations, if the runway evidence or procedures indicate more moisture, or if braking action reports a change, you would consult the current performance data and rules to adjust accordingly.

When evaluating takeoff and landing performance, the amount of moisture on the runway changes the friction and how far the airplane may need to accelerate or decelerate. In this question’s framework, a damp runway is treated as a dry runway for performance calculations. That means the braking and acceleration characteristics used for planning are the same as those for a dry surface, because the moisture isn’t judged to be enough to significantly alter friction or risk hydroplaning.

So the best choice is that a damp runway is considered a dry runway because, for these charts and training materials, the moisture level is not sufficient to shift the performance data away from the dry baseline. In real operations, if the runway evidence or procedures indicate more moisture, or if braking action reports a change, you would consult the current performance data and rules to adjust accordingly.