Instrument flight rules (IFR) is one of two sets of regulations governing all aspects of civil aviation aircraft operations; the other is visual flight rules (VFR).
FAA's Instrument Flying Handbook defines IFR as: "Rules and regulations established by the FAA 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. It is also a term used by pilots and controllers to indicate the type of flight plan an aircraft is flying, such as an IFR or VFR flight plan.
Read more about Instrument Flight Rules: Separation and Clearance, Weather, Navigation, Procedures, Qualifications
Famous quotes containing the words instrument, flight and/or rules:
“Man lives consciously for himself, but is an unconscious instrument in the attainment of the historic, universal, aims of humanity.”
—Leo Tolstoy (1829–1910)
“Here I am.... You get the parts of me you like and also the parts that make you uncomfortable. You have to understand that other people’s comfort is no longer my job. I am no longer a flight attendant.”
—Patricia Ireland (b. 1935)
“It’s not wise to violate rules until you know how to observe them.”
—T.S. (Thomas Stearns)