![]() ![]() radiobalise de guidage d atterrissage, f … Radioelektronikos terminų žodynas Localizer - kurso radijo švyturys statusas T sritis radioelektronika atitikmenys: angl. In some cases a localizer is at an angle to the runway usually due to obstructions around the airport. The localizer provides runway centerline guidance to aircraft. Localizer - A localizer is one component of an Instrument Landing System (ILS). instrument landing system, ILS) ist ein bodenbasiertes System, das den Piloten eines Flugzeuges bei Anflug und Landung mittels zweier Leitstrahlen,… … Deutsch Wikipedia Localizer - Abbildung der Sendekeulen von Localizer und Glideslopes Das Instrumentenlandesystem (engl. a directional radio beam sent from the beginning of the runway and used to align an incoming airplane … English World dictionary a directional radio beam sent from the beginning of the runway and used to align an incoming airplane * * * … Universalium On aeronautical charts, the availability of this facility is indicated by the symbol. The localizer coverage is indicated in the illustration. Identification is transmitted on the localizer frequency, using International Morse Code it consists of a three-letter identifier preceded by the letter I (. When the pilot is flying along the centerline, the needle stays in the center the pilot makes an effort to maintain this throughout the approach. If the aircraft is not on the centerline, the ILS vertical needle swings to indicate lateral displacement. The two signals are transmitted from highly directional antennae in such a way that the two signals overlap with equal strength on the runway extended centerline. A localizer transmits two signals, one modulated with a 90-hertz tone and the other with a 150-hertz tone. ![]() It operates in the frequency band of 108 to 111.95 MHz. It indicates the extended centerline of the runway and the approach path onto the runway and directs the pilot to make his or her final approach along this path for landing. It's easier to say "join the localizer" than "join the RNAV RWY 17 final approach course.An element in the instrument landing system (ILS) located approximately 1000 ft (300 m) beyond the upwind end of the runway and generally in line with the centerline. ![]() The localizer provides a common reference that all pilots can join and follow while they can maintain visual separation from each other, allowing closer spacing of aircraft. The same benefits can apply even in visual conditions. Not all aircraft may be able to join an RNAV course by vectors, but pretty much any airliner can intercept an ILS localizer. RNAV approaches have more locations where aircraft can join them, which may be inconvenient depending on the direction from which an aircraft is arriving. Aircraft can be vectored in anywhere along the localizer. It's also easier to sequence them if they are all on the same approach course along the localizer, where an RNAV approach may have multiple initial fixes that follow various paths to get to the same final approach fix.Īn ILS approach gives ATC more control over the spacing and sequencing of aircraft onto the final approach course. It's easier to space and sequence aircraft if they are all on the same approach, rather than trying to get aircraft on multiple approaches to mesh together just right. Pilots can always request something different but ATC is trying to get everyone to their destinations as safely and quickly as possible. As the pilots are on their descent to the destination, they will be told which approach to expect. ATC will decide what runways and approaches are in use based on the weather. As egid pointed out, pilots typically do not file a specific approach as part of their flight plan. ![]()
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