What are the blue colored planes on flightradar24?

Blue: Aircraft displayed as blue icons are currently being tracked via satellite. Satellites are collecting the ADS-B signals from aircraft and transmitting them to the Flightradar24 network. Space-based ADS-B tracking will be used to supplement our terrestrial receiver network.



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Aircraft located using satellite data are coloured blue on the map, and yellow if located by terrestrial receivers.

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Flightradar24 is the first flight tracking service which offers space-based ADS-B-tracking. The blue planes on the map are tracked from a satellite and the yellow ones are tracked from the regular earth-based radar stations.

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Aircraft located using satellite data are coloured blue on the map, and yellow if located by terrestrial receivers.

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Websites such as ADSBExchange.com, FlightRadar24.com and FlightAware.com aggregate flight data in the United States and abroad using a mix of commercial and citizen-owned sensors that capture the movements of commercial, civilian and military aircraft in real time, 24 hours a day.

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For security reasons the US government doesn't usually make it easy to track Air Force One when they president is travelling to different destinations. There are some publicly available resources that claim to provide details of various flights around the world, including the route of Air Force One.

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Red: When an aircraft is displayed as red that means that you are currently following that specific aircraft on the map or that the aircraft's transponder is squawking an emergency code. These codes are 7500 (Hijack), 7600 (Communication Equipment Failure), 7700 (General Emergency)

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Red: When an aircraft is displayed as red that means that you are currently following that specific aircraft on the map or that an emergency squawk is on for this aircraft.

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The most well know of these is the code 7700. This is used to indicate an emergency of any kind. A pilot will enter this when in an emergency situation - either instructed by ATC after declaring an emergency or without communication if there is no time.

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From the time it lifted off from Kuala Lumpur at 15:42 local time, SPAR19 was already the most tracked flight on Flightradar24 among active flights. By the time it landed in Taipei, SPAR19 was being tracked by more than 708,000 people around the world, making it the most tracked live flight in Flightradar24 history.

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What is the longest flight in the world by distance? The longest flight in the world by distance is New York (JFK) to Singapore (SIN) on Singapore Airlines clocking in at 9,537 miles. What plane can fly the farthest in the world?

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A note about Estimated coverage: when you see a dashed or gray line behind an aircraft, that's estimated coverage. Colored lines indicate actual positions. When an aircraft is out of coverage, we estimate based on great circle routes to destination.

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The first emergency code that you may have become familiar with is Squawk 7500. This code is used to indicate that the aircraft has been hijacked, and therefore requires urgent emergency support from both security services and air traffic control.

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If a crew resets their transponder to the emergency code of 7700 (squawking 7700), all air traffic control facilities in the area are immediately alerted that the aircraft has an emergency situation.

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If the trail is a black dotted line, the aircraft is outside our coverage area and its position is being estimated.

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Code 7600. Code 7600 is the code for a loss of radio. If a pilot's radio goes out during a fight, they can enter 7600 into the transponder. Then they should proceed to their intended airport following a standard landing plan. Pilots should be extra careful and on alert for other aircraft around them in the sky.

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The position is calculated based on many different parameters and in most cases it's quite accurate, but for long flights the position can in worst cases be up to about 100 km (55 miles) off. In settings there is an option to set for how long time you want to see estimated aircraft on map.

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Air Force One is not routinely escorted by fighter jets while it is flying. Yes, it is closely monitored by Air Traffic Control and by the US military (through NORAD) during its flight, but it does not routinely receive fighter escort, especially over the continental United States.

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Military aircraft in particular are exempt from many civil rules and regulations which would see most aircraft having an active transponder and of course their operational requirements will dictate they often do. That said, ultimately, any plane CAN disable it if they wish.

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