Under what condition must Wet takeoff performance numbers be used for the 737NG?

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Multiple Choice

Under what condition must Wet takeoff performance numbers be used for the 737NG?

Wet takeoff performance numbers are used when the runway is fully wet, because water covering the entire surface changes friction and takeoff distance. On the 737NG, these numbers are the data set you apply only if the runway is completely soaked; if any portion is dry or merely damp, the wet data would not be appropriate and dry (or other specific) data are used instead. Forecasted precipitation doesn’t by itself mandate using wet numbers—the actual runway condition at the time does. Therefore, the condition that requires wet takeoff data is a runway that is completely wet.

Wet takeoff performance numbers are used when the runway is fully wet, because water covering the entire surface changes friction and takeoff distance. On the 737NG, these numbers are the data set you apply only if the runway is completely soaked; if any portion is dry or merely damp, the wet data would not be appropriate and dry (or other specific) data are used instead. Forecasted precipitation doesn’t by itself mandate using wet numbers—the actual runway condition at the time does. Therefore, the condition that requires wet takeoff data is a runway that is completely wet.

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