What is the required visibility for VFR flight in controlled airspace?

For VFR (Visual Flight Rules) flight in controlled airspace, the required visibility is indeed 3 statute miles. This requirement ensures that pilots have an adequate visual reference of the environment outside the aircraft, which is crucial for safe navigation and the ability to see and avoid other aircraft, as well as terrain and obstacles.

In controlled airspace, pilots are assumed to be operating under visual conditions, which means they need to have sufficient visibility to maintain awareness of their surroundings. A visibility of 3 statute miles allows pilots to make informed decisions, maintain separation from other aircraft, and avoid congested areas, enhancing overall flight safety.

The requirements vary in different types of airspace and conditions, with some airspaces potentially requiring higher visibility or additional criteria, but in general controlled airspace, the visibility requirement is set at 3 statute miles. This standard reflects a balance between safe operations and operational accessibility for pilots flying under VFR.