Flight rules

• Instrument flight rules, regulations and procedures for flying aircraft by referring only to the aircraft instrument panel for navigation
• Night VFR, the rules under which flight primarily by visual reference is done at night
• Special visual flight rules, a set of aviation regulations under which a pilot may operate an aircraft
• Visual flight rules, 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

  Conditions

• Instrument meteorological conditions, weather conditions that normally require pilots to fly under Instrument Flight Rules
• Visual meteorological conditions, weather conditions that normally require pilots to fly under Visual Flight Rules