Flight Tracking Guide
How live flight maps work
Live flight maps combine public aircraft position reports with a map view. FlightLen turns those reports into aircraft icons and a details panel with callsign, altitude, ground speed, heading, registration, and aircraft type when the data is available.
Why aircraft can appear, move, or disappear
Aircraft position feeds update in batches. A plane may be visible one moment and missing the next if its signal is stale, out of coverage, blocked, or not included in the current feed response. FlightLen refreshes automatically and keeps recent context so the map feels responsive while still reflecting live data limits.
What the numbers mean
Altitude is shown in feet, ground speed in knots, and heading in degrees. A heading of 090 degrees is eastbound, 180 is southbound, 270 is westbound, and 360 or 000 is northbound. Vertical rate shows whether the aircraft is climbing, descending, or level.