Another stupid question for you smart people out there.I seem to remember in FS2002 that I took a turbo prop to 34,000 ft and remember seeing contrails when switching to Tower or the Spot view, but I am unable to recreate this. Watching the History Channel, I always see color films of World War II bombers at like 25,000 ft or so and hundreds of them in their formations and it sticks in your mind because the sky is a clear blue below the bombers, but almost completely white from all the contrails coming from the bombers, it's really cool. Anyway my question is, why can I not get contrails to come from turbo props in FS? The other day I took the default King Air to 34,000 ft in default FS weather and got nothing, I then took the 737 up to 34,000 ft. and was getting contrails. Anyone know why this is?Thanks,Jeff USAF

In FS9, you can have contrails with Tprops--just add the line :max_contrail_temperature = XX (where XX is usually between -25 to -30)To the GeneralEngineData section of the aircraft.cfgIn FS2002, only Tprops based on the jet engine model could produce contrails. There were a number of tprops which used the jet engine model for whatever reason, which is why you remember seeing contrails in FS2002 for one or two tprops...-John

Interesting stuff, thanks John! Also it would seem that adding that line would make FS more realistic, because not only would you see contrails of other jets as far as AI traffic goes, but now you may see contrails from Turbo props as well. It will be take a while to edit all of my Ultimate traffic AI planes to get this effect though.Jeff USAF