Why some flights are blue in Flightradar24?

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



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From 3 March 2020, ADS-B data collected by satellite was made available to all users. 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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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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Some high profile aircraft, such as Air Force One are not displayed. Most other aircraft subject to restriction are shown as anonymized by aircraft type.

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I often see military flights in the sky, which do not appear on FlightRadar24. I do understand that low-flying military airplanes do no necessarily get picked up by these trackers, and that some military aircrafts switch of transponders. However some flight do appear on this ADSB-Tracking website.

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Flightradar24 is a global flight tracking service that provides you with real-time information about thousands of aircraft around the world. Our service is currently available online and for your iOS (iPhone, iPad, iPod Touch) or Android device.

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Tracking the Antonov An-225: the world's largest cargo aircraft.

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Does FlightRadar show private planes? Yes, it does, but the data is limited. If an operator doesn't want their personal details published, FlightRadar will block out that information or even omit showing the aircraft directly related to high-profile individuals, like Air Force One.

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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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Restricted aircraft Operators of private or sensitive aircraft may request their tracking details be restricted or not displayed. Generally, aircraft requesting that they not be displayed on Flightradar24 are military aircraft. Some military aircraft, such as various transport aircraft, are visible.

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The Best Mobile Flight Tracker Apps
  • FlightAware Flight Tracker (iOS, Android) ...
  • Flightview – Flight Tracker (iOS) ...
  • FlightStats (iOS, Android) ...
  • ADSB Flight Tracker (Android) ...
  • Plane Finder – Flight Tracker. ...
  • Planes Live – Flight Tracker (iOS) ...
  • App in the Air (Android) free version. ...
  • Flight Board (Android)


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If you're looking for fighters (fighters are hard to find unless they're trainers), look near the Mach Loop in Wales. If you're looking for tankers, look near the channel and on the east coast.

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While it may sound shocking to some, the simple fact is that some aircraft may simply not have their transponder on, or it may be temporarily off, or they may be carrying passengers or cargo, which warrant deactivation. In addition, not all airspace activity is always relayed to FlightRadar24 at all times.

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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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If the aircraft's position surpasses 2500 meters in altitude, the trail will be light blue, and will then change to dark blue, purple and finally red for the highest possible altitude. 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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