On sites like flightstats.com, there is an "event timeline" view that shows changes made to the scheduled departure or equipment for a commercial flight. I assume this information is being pulled from some central system / API.
Jul 26 05:00 1:00 AM 6:00 AM Gate Adjustment TAIL Changed From N14106 To N14102 Jul 26 14:27 10:27 AM 3:27 PM Gate Adjustment Departure Gate Changed From 125 To 128 Jul 26 20:23 4:23 PM 9:23 PM Gate Adjustment TAIL Changed From N14102 To N34131 Jul 26 21:30 5:30 PM 10:30 PM Time Adjustment Estimated Gate Arrival Changed From 07/27/16 07:30 AM To 07/27/16 07:31 AM Jul 26 21:31 5:31 PM 10:31 PM Time Adjustment Estimated Runway Departure Changed To 07/26/16 07:50 PM Estimated Runway Arrival Changed To 07/27/16 06:54 AM
Is there a programmatic source for this data? Perhaps with additional metadata not exposed on flightstats.com? I understand they do have an API themselves, which does not seem suited to hobby uses, so I'm looking for another source. Are these departure changes submitted to FAA/ICAO? Are they airport-local only?