Contaminant

A deposit (such as frost, any snow, slush, ice, or water,) on an aerodrome pavement where the effects could be detrimental to the friction characteristics of the pavement surface.

Source: FAA Pilot/Controller Glossary (definition from the 2023 edition; current: Change 1 of 7 August 2025); FAA Advisory Circular 150/5200-28, Notices to Airmen for Airport Operators.

See also

Related terms

Glossary last updated 2026-10-28.

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