A new update for Contrails Pro is now available from FlightSimTools.com. The update corrects a few problems and offers more customization options.
Contrails Pro is a module for FSX and FS9 that adds realistic contrails to AI aircraft. It allows displaying contrails in unprecedented detail while keeping high frame rates. Just like in the real world, contrails will slowly dissipate in the air and will glow in red during sunrise or sunset.
There are excellent customization options allowing you to specify the contrail length, density, dispersion and a few other settings.
For more information and a free demo version, please visit the product page: Â http://secure.simmarket.com/flightsim-tools-contrails-pro.phtml