Dry runway

A runway is dry when it is neither wet, nor contaminated. For purposes of condition reporting and airplane performance, a runway can be considered dry when no more than 25 percent of the runway surface area (within the reported length and the width being used) is covered by: visible moisture or dampness, frost, slush, snow (any type), or ice.

Source: AC-150/5200-28-F

See also:

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