Question

When calculating in flight landing distance performance for grooved or PFC runways during heavy rain what RCC value should you use?

Answer 1

The RCC value to use for calculating in-flight landing distance performance depends on the type of runway - grooved or PFC. For grooved runways, an RCC value based on water depths is used, while for PFC runways, an RCC value is not typically used.

Step-by-step explanation:

When calculating in-flight landing distance performance for grooved or PFC runways during heavy rain, the Runway Condition Code (RCC) value to use depends on the type of runway.

For grooved runways, the RCC value would be based on the water depths on the runway surface. The minimum water depth that would require the use of an RCC value is typically 0.13 inches (3.3 mm).

On the other hand, for PFC (Porous Friction Course) runways, the RCC value is not typically used because these runways are designed to drain water effectively and maintain good friction even in heavy rain.