Visual Flight Rule Law and Legal Definition
Visual flight rules (VFR) are a set of regulations which allow a pilot to operate an aircraft in weather conditions generally clear enough to allow the pilot to see where the aircraft is going. Specifically, the weather must be better than basic. The VFR weather minimums, as specified in the rules of the relevant aviation authority. The weather is worse than VFR minimums; pilots are required to use instrument flight rules. The VFR requires a pilot to be able to see outside the cockpit, to control the aircraft's attitude, navigate, and avoid obstacles and other aircraft. To avoid collisions, the VFR pilot is expected to "see and avoid" obstacles and other aircraft.