What is cavok?

CAVOK is an aviation term used to describe the weather conditions when the ceiling (cloud base) is at or above 10,000 feet and the visibility is greater than 6 miles. The term CAVOK stands for Ceiling and Visibility OK.

Pilots can use CAVOK as an indicator of good flying conditions and plan their flights accordingly. It can also be used for air traffic control and airport operations, as it indicates safe landing and takeoff conditions.

However, it's important to note that even with CAVOK conditions, pilots still need to keep a lookout for other potential hazards such as icing, turbulence, and thunderstorms. They must also abide by the rules and procedures outlined by air traffic control.