Hello everybody,I didn't use fsdll for a while (I'm working on tools for Legacy !!) and forgot many things.The only way to avoid those dynamic aircraft is to use my tool VolNav with fsdll.You can download it at this place :http://fichiers.simvol.org/fly/fly_2/VolNav_v151_EN.zipPlease read manual.An another way to have virtual aircraft is to use my other dll, AtcSynth, which simulate control and virtual aircrafts avoiding collision. But you need also to use VolNav to prepare the used airport but LFRS is ready to use (this is where I live !)You can download it at this place :http://fichiers.simvol.org/fly/fly_2/ATCsynth_v201_beta_en.zipFor AtcSynth you need also Squawkbox at this place :http://fly.simvol.org/telecharger.php?id=3If you want to use AtcSynth and Squawbow please read the english pages from SimvolDidier

Hallo Didier,thanx for your hints. I have all the mentioned tools, also yours. When I have time in this week I will try it again with "Tricks an tips" of your manual.By the way VolNav is a great tool - I like it :-)Greetings to NantesWerner