In VFR conditions, what is the minimum visibility required for a controlled airport?

In VFR (Visual Flight Rules) conditions, the minimum visibility required for operations at a controlled airport is defined as 3 statute miles (SM). This requirement is in place to ensure that pilots have sufficient visual reference during takeoff, landing, and other flight maneuvers when operating in a controlled airspace environment.

When pilots have at least 3 SM of visibility, they can effectively see and avoid other aircraft, as well as navigate using visual references such as landmarks and the ground. This visibility standard is significant for maintaining safety in busy airspace.

The other visibility options listed, although they represent various regulations and guidelines for different types of airspaces and flight operations, do not meet the minimum standard established for controlled airports in VFR conditions. This ensures that pilots are operating under safe conditions where visual flight is feasible.