What is the visibility requirement in controlled airspace?

In controlled airspace, the visibility requirement is generally set at 3 statute miles regardless of the time of day. This requirement is established to ensure that pilots have sufficient visual references to navigate safely and maintain awareness of other aircraft and potential obstacles.

The visibility parameter plays a crucial role in situational awareness and is aimed at reducing the risk of collisions as well as providing better navigation capabilities for pilots. The stipulation of 3 statute miles helps ensure that pilots can see and avoid other aircraft in a controlled environment.

Different types of airspace do have varying visibility and cloud clearance requirements, but in controlled airspace, the clear height from the ground coupled with the visibility requirement of 3 statute miles enhances safety by allowing pilots to maintain visual contact with both the ground and the surrounding aerial environment.