when i have traffic on 100% when viewing for more than an hour or so,my ai aircraft land after each other.so seem to just sit on therunway.can anyone tell me how i can over come this problem

Does this happen at all airports? Are you using any traffic add-ons? Are you flying around or sitting on the ground plane-spotting?My guess is that 2 or more aircraft have deadlocked trying to use the same taxiway in different directions. The ground AI is pretty good, but a lot of time planes will still try to do this. Eventually, the planes will simply vanish and things will get back to moving. Of course, if you've got other planes backed up behind the stuck ones, they are going to fall into the same trap.You might be able to see the bottleneck by using the overhead view (ctrl-s) when this happens. If it is a deadlock, see if you can create another taxiway path around it with AFCAD.

Thank you captain i will try redoing my afcad yes this happens whenplane spotting when the traffic is conjested at uk2000 gatwick & heathrow.but there does not seem to be any aircraft blocking thetaxiways. and i use {viewpoint bus} well away from runway & taxiway.Any other suggestions if afcad is not the problem

The reason this happens actually has nothing to do with the AFCAD but simply with ATC overload. At very busy airports the ATC chatter will sometimes be so heavy that some aircraft will not be able to get their voice in to contact tower to request landing clearance. Unfortunately, due to software limitations an AI aircraft will not properly vacate the runway and contact ground if it has not been previously cleared to land. The only way to avoid this would be to space out arrivals in such a fashion to ensure proper traffic separation. I think there is a tool for that in the avsim library, but I haven't tried it and I would assume that it undoes some of the desired real world scheduling realism.Misha

"I think there is a tool for that in the avsim library,"Do you by any chance remember its filename?Stamatis