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In aviation, 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). The U.S. Federal Aviation Administration 's (FAA) Instrument Flying Handbook defines IFR as: "Rules and regulations established by the FAA to govern flight under ...
A pilot's view of the runway just before landing in thick fog at night. In aviation, instrument meteorological conditions (IMC) are weather conditions that require pilots to fly primarily by reference to flight instruments, and therefore under instrument flight rules (IFR), as opposed to flying by outside visual references under visual flight rules (VFR).
For pilots without an instrument rating who cannot legally fly by instrument flight rules, the restrictions of VMC minima can be troublesome in locations where weather conditions can change suddenly and unexpectedly or when weather events are highly localized. For instance, a small cloud forming over the airport at less than 1000 feet ...
This instrument flight rules chart shows low-altitude airways in the Oakland Area Control Center (near San Francisco, California). In the United States, airways [1] or air routes are defined by the Federal Aviation Administration (FAA) in two ways: "VOR Federal airways and Low/Medium Frequency (L/MF) (Colored) Federal airways" [2]
Instrument Flight Rules (IFR) Public transport flights are almost exclusively operated under IFR, as this set of rules allows flight in regions of low visibility (e.g. cloud). On the other hand, a large amount of private flying in light aircraft is done under VFR since this requires a lower level of flying skill on the part of the pilot, and ...
instrument flight procedure: IFR instrument flight rules: IFSD in-flight shutdown: IGV inlet guide vane ILS instrument landing system: IMC instrument meteorological conditions: IML inside mold line IND indicator InHg inch of mercury: INS inertial navigation system: IPC illustrated parts catalog (e.g. by Boeing, Airbus) IR initial release IRS
Instrument flight rules, regulations and procedures for flying aircraft by referring only to the aircraft instrument panel for navigation; Night visual flight rules, 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
[2] A procedure under instrument flight rules (IFR), called a contact approach, is often referred to as a form of "legalized" scud running. [ 3 ] The term gets its name from scud , which is used to describe small, ragged, low cloud fragments that are unattached to a larger cloud base, and often seen with and behind cold fronts and thunderstorm ...