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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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.
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.
What does grey dot mean on Flightradar24? Gray: The flight is scheduled and there isn't an additional status available. Green: The flight is estimated to be on time or arrived at time. Orange: The flight is estimated to be delayed or was delayed.
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.
The dashed line is the flight's filed/planned route and is shown when we have that data available. That's the Wall to keep out the white-walkers. The dashed blue line is the intended flight plan route. The green line is where it actually went as tracked by reception of the ADS-B transmissions from the aircraft.
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.
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.
Not being show on Flightaware just means they are on one of the block lists maintained by FAA and EASA. There are military encrypted transponders , that's something you can't receive locally. I've noticed i see tons of military aircraft on ADS-B Exchange but on Flight Aware they don't show up.
These clouds are contrails, short for condensation trails. Water vapor is one of the byproducts of jet fuel combustion and will turn into ice crystals in the cold air at the high elevations where jet airplanes fly. Those ice crystals create a cloud (the contrail), which does not pose any public health risk.
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.
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.
FlightAware began as a free interface into a single data feed from the FAA. Today, FlightAware provides the most accurate and comprehensive flight tracking by fusing data from thousands of sources around the world.
Currently, the bragging rights for the longest flight in the world belong to Singapore Airlines' New York City to Singapore route. Its longest flight path, which connects Singapore's Changi Airport with New York's John F. Kennedy International Airport, 9,585 miles away, takes 18 hours and 40 minutes.
A flight may not be visible on Flightradar24 for different reasons, but most likely it is either outside our coverage in that area or not equipped with a compatible transponder or a combination of the two.