Im not sure what’s going on, but I get cancelled flight messages, and when checking sched for that aircraft, flights have been deleted from it’s schedule without my knowledge. This is the second time it has happend. Now flights show up as red, which is really not a possible way to save or activate the schedule. Two weeks ago, one aircraft had it’s whole schedule emptied except for one single flight.
You should give some more information, there are a lot of reasons this can be happening.
Is your plane in the airport it’s supposed to be? Are there no problem with runway lengths? Are all the flights correctly scheduled? (time window, departure and arrival slots).
If you go to the flights display (in flight management menu) you have an overview of the routes each plane is flying including passenger stats, arrival/ departure time etc. There you can also see the status of your flight. Normally it should say booked, inflight or finished. If you see that it is cancelled (light blue), go click/scroll with your mouse over the word cancelled and you can see why it is cancelled. That information can help you to find out what the problem is.
You can also post some screenshots from flight-display and the schedule-display on this topic. We can have a look than and find out what the problem is.
The flights are cancelled because the aircraft is in wrong location. Originally the aircraft was scheduled to fly r/t, but the return segments are being deleted. What I mean is, the flights which I have scheduled are being preempted.