Instrument flight rules (IFR)

Definitions

• Rules that govern the procedure for conducting flight in weather conditions below VFR weather minimums. The term “IFR” also is used to define weather conditions and the type of flight plan under which an aircraft is operating.
• Rules that govern the procedure for conducting flight in weather conditions below VFR weather minimums. The term “IFR” also is used to define weather conditions and the type of flight plan under which an aircraft is operating.
• Rules and regulations established by the Federal Aviation Administration to govern flight under conditions in which flight by outside visual reference is not safe. IFR flight depends upon flying by reference to instruments in the flight deck, and navigation is accomplished by reference to electronic signals.
• Rules governing the procedures for conducting instrument flight. Also a term used by pilots and controllers to indicate type of flight plan.

References

• Airplane Flying Handbook, Federal Aviation Administration, 2021
• Instrument Flying Handbook, Federal Aviation Administration, 2014
• Powered Parachute Flying Handbook, Federal Aviation Administration, 2007
• Risk Management Handbook, Federal Aviation Administration, 2022
• Weight-Shift Control Aircraft Flying Handbook, Federal Aviation Administration, 2008