As always I come to the forum with another little thing that I would love to know more about.
When you check on aiport websites for flight information (departures and arrivals) it tells you always the scheduled time of arrival or departure (which I guess is simple to know) but in the case of arrivals an estimated time which is sometimes before or after the scheduled time.
My question is - how does this system get this information.
Specific example - If I was checking EZE and saw an Iberia flight from MAD with a 10 minute late arrival time while plane is still say half way into its flight, how did that info get into EZE flight info.
As always a thousand thanks to you all