What does a red flight path mean on flight radar?

FlightRadar can pick up when planes send out these codes and will mark a plane as red for emergency. If you really want to know when this happens you can set up notifications on your app to buzz you when there's trouble. You can set up notifications on the FlightRadar24 app to ping you when there's an emergency.



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The numbers are in meters. If the plane is below 100 meters in altitude, the trail will be white. If it is above 100 meters, the trail will yellow, then green, then above 2500 meters it will become light blue, then dark blue, purple and for the highest altitude it will be red.

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On the map a coloured line shows the route of the aircraft. Purple colours indicate cruising altitudes. White colours indicate the plane is on the ground. As a plane takes off, the colours change from white, to yellow, to green, to light blue, to dark blue and finally to purple.

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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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For flights that are no longer in our coverage area, we may estimate their position for up to 240 minutes. These flight tracks are shown as black dashed lines. Read more about estimated positions on Flightradar24.

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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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On the map a coloured line shows the route of the aircraft. Purple colours indicate cruising altitudes. White colours indicate the plane is on the ground. As a plane takes off, the colours change from white, to yellow, to green, to light blue, to dark blue and finally to purple.

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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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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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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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Squawk codes are what air traffic control (ATC) use to identify aircraft when they are flying. They are unique four-digit numbers and range from 0000 to 7777; some of which are fixed values signifying specific scenarios (see below), others being randomly generated by ATC.

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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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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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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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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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While fuel dumps don't happen every day, they're also not uncommon. Nor do they usually represent a major emergency. In fact if an aircraft is taking the time to dump fuel before landing, that's likely an indication that the issue forcing the plane to land is serious but not critical.

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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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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.

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