zeedoktor

Hi Marco, indeed, RealTraffic's data sources do not filter out any traffic. You can fly with Air Force 1 if you wish and as long as they don't transmit a fake hex id. They sometimes do this, depending on which airspace they fly in, and then they show up as a KC130, or similar aircraft. RT shows anything that sends out an ADS-B signal. You'll even see the Google Loon ballons (the few that are left) at 60'000ft

Are you saying the traffic was on the ground gathered at the OM (outer marker)? Can you give me a time and location so I can look it up?

RT expires traffic when the last valid position timestamp is 60 seconds old. It is up to the client applications to deal with any logic that would expire them sooner, or stops painting them when the positions no longer update. If RT stops transmitting traffic that is no longer updating too soon, there's a chance much traffic in areas of sub-ideal coverage disappears prematurely, because often just one or two position updates (10 - 20s) are missing, then the traffic is back as another receiver picks up or they were just passing through a blind spot for the receiver that's feeding the data. All client applications I'm aware of interpolate the positions to provide smooth motion, and thus buffer 30s or longer before starting to paint traffic. There's only so much logic that can be handled on the RT servers I'm afraid. Also, something RT will never do is send interpolated or artificial position data. Every position data point you get is real, was sent by the aircraft, and is authentic. Note this is NOT the case for altitude, V/S, speed, track, callsign - those might just be repeats of already buffered data. This is because of how the feeder networks work, as well as due to some information not being transmitted in every data frame.

A20N is correct. First time I saw one I thought of Antonov... :-) Note that Easyjet has a variety of callsigns, EZY (UK based), EJU (EU based), and EZS (Switzerland based). Consult the wiki for help on others as well: https://en.wikipedia.org/wiki/List_of_airline_codes_(E)

RealTraffic doesn't display position estimates or extrapolated positions, it only shows positions received by an ADS-B receiver. FR24 extrapolates up to 4 hours (depending your settings in the web interface), which leads to Fr24 not necessarily telling you the full truth about where an aircraft is.