Following the unfortunate trend about late flights that is being debated in the airline industry, flight tracking is now fully deployed in that industry to be able to give the public, organizations and government agencies an idea about how flights are faring up in the skies after their departure from airports. This is a major innovation that has so far helped to douse the tension gripping some relations and friends of passengers who are sometimes told that certain flights will not be arriving as at when due. Apart from the punctuality factor, airport and airline authorities need to have comprehensive information and statistics about flights originating from different airports and bases all over the world. Hence there is the need for a flight tracker to be made to fill in the requirement for the overall functioning and development of the airline industry. A flight tracker is an invaluable tool in modern day flight arrangements among operating airlines and the airports concerned.

A flight tracker’s main function is to monitor all the details of fully operational flights in real time. A flight tracker is a powerful tool whose results are based almost exclusively on flight information that comes from a data feed called the Aircraft Situation Display to Industry. This is also known as ASDI. The data feed used in this article as an example, tracks all flights operating within the precincts of the United States’ controlled airspace. Although there is limited information that is made available outside the United States’ airspace but it is primarily for commercial or passenger flights within the country. There is a wide variety of airlines and websites that have flight tracker technology and tools embedded in them so checking flight situation for US flights is easy on them. A flight tracker functions in a simple way, that is by interpreting the flight information from the data feed, then relaying the information to the user. A flight tracker tool requires the user to “fill in the blanks.”

Sometimes flight trackers are not accurate in their calculations therefore you may end up getting estimates of departure and arrival times of certain flights. When this happens, you simply allow for about ten minutes more or less of the actual arrival or departure times, if you are waiting for a flight. In most cases, it may not even be up to ten minutes. The ASDI data feed also contains the needed information for flights controlled by the air traffic control unit. Pilots are required by regulations, to give their flight plan to the air traffic control unit before departure. The flight plan is a schedule that contains information about that flight e.g. expected departure and arrival times, flight route, etc. Once the flight departs from its base, information relating to its position, altitude, distance, and speed as well as estimates of timing are published.

The departure and arrival times are essentially the aircraft’s runway times i.e. the time the flight took off from the runway. However, the data feed does not publish the gate times which refers to the time the aircraft's door is shut at departure or opened on arrival. For security reasons, the flight information published on the data feed is delayed for five minutes. Therefore users who wish to track a flight need to enter the flight number, then the flight tracker displays the information it has about the flight; usually overlaying a plane simulation on a map to give the user the right information about the current location of the flight.

Some flight tracker tools require the user to know certain details about the flight e.g. the flight number. Flight trackers generally have among other characteristics, the following capabilities: the flight status details it collects is in near real-time within a particular airspace; combines runway and gate times; has global coverage based on information from airlines and airports; provides excellent code-share mapping; links airports’ delay information to the affected flight; stores useful flight information and calculates punctuality performances of airlines and many other functions. To use this powerful tool in tracking a flight, one usually needs to be a registered member of the site to enjoy their services. Flight trackers indeed ease the stress associated with knowing a flight’s status.