AI Traffic Density

Jim,I've found that there are quite a number of airlines that don't have callsigns. Some of them are fairly new so they don't have one assigned as yet, while others just don't have a published callsign. This situation does not help the slider issue but I think FSX uses the aircraft registration to identify the aircraft - at least in flight plans. Of course there are some developers that don't "paint" a registration on their textures. So, I guess you could say you're S O L - if you know what I mean. Frank