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acr. (context aviation English) ceiling '''a'''nd visibility are OK; specifically, (1) there are no clouds below 5000 feet above aerodrome level (AAL) or minimum sector altitude (whichever is higher) and no cumulonimbus or towering cumulus; (2) visibility is at least 10 kilometres (6 statute miles) or more; and (3) no current or forecast significant weather such as precipitation, thunderstorms, shallow fog or low drifting snow.


CAVOK or Cavok can refer to:

  • An abbreviation for Ceiling and Visibility OK, used in METARs
  • CAVOK Air, a Ukrainian cargo airline established in 2011
  • Hatherleigh CAVOK, a motorglider