Which statement about CAVOK is accurate?

• A. No cloud below 5,000 ft, visibility above 10 km, and no significant weather
• B. No clouds anywhere
• C. Visibility below 2 km is acceptable
• D. Significant weather is allowed

Answer: (A)

CAVOK stands for Ceiling And Visibility OK and flags very favorable flying conditions. It means three things at once: visibility is at least 10 km, there is no significant weather, and the cloud ceiling is at or above 5,000 ft above the airfield. The statement that fits best is the one describing no cloud below 5,000 ft, visibility greater than 10 km, and no significant weather, because it satisfies all three criteria. The other ideas don’t fit because no clouds everywhere isn’t required (clouds above 5,000 ft are allowed), or visibility below 2 km would not meet the 10 km minimum, or allowing significant weather would violate the definition of CAVOK.