What is the minimum flight visibility required for VFR flights in Class D airspace?

For VFR (Visual Flight Rules) flights in Class D airspace, the minimum flight visibility required is 3 statute miles. This regulation is established to ensure that pilots have sufficient visibility to maintain visual reference to the ground and to other aircraft while flying in this type of airspace, which is typically found near airports with an operational control tower.

In Class D airspace, pilots are expected to be able to see and avoid other aircraft, obstacles, and the terrain. A requirement of 3 statute miles of visibility allows pilots to exercise their visual judgment and effectively navigate while maintaining safety standards.

In contrast, the other visibility requirements do not meet the regulatory standards for VFR operations in Class D airspace. They would either be too low or not in alignment with the Federal Aviation Administration's regulations designed to promote safety in the aviation environment.