Traffic Situation Display (TSD)
TSD graphically displays current aircraft positions on a national scale superimposed on maps of geographical boundaries or NAS facilities. It displays all Instrument Flight Rule aircraft and other flights tracked by the 20 Centers. The TSD user can select numerous methods of filtering to highlight groups of aircraft since the system can display all known flights simultaneously or filter out all but a selected group of flights. Aircraft fly on a network of airways. Below 18,000 feet mean sea level (MSL), these are called Victor airways. At and above 18,000 feet MSL, they are designated Jet routes. The TSD can display these complex networks to assist flow management and aircraft routings.
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