Multiple choice

CAVOK is used if visibility is more than ____ km.

  1. 4

  2. 6

  3. 8

  4. 10

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CAVOK (Ceiling and Visibility OK) is used in METAR reports when visibility is 10 km or more AND there are no clouds below 1500m (5000 feet) or below the lowest minimum sector altitude, whichever is higher, AND no significant weather phenomena. The visibility threshold for CAVOK is 10 km, making option D correct.