HI A.J.That beta version is quite old and much has been fixed since then. You might want to try the latest version and follow the suggestions in the Revisions.Thanks,

Hello, I use the current 314 beta build with FSX sp2 with the levelD 767 and PMDG md11 & 747. My bad, thats a typo. I am using the 431 build, not 314 :( Sorry about that

My typo at the title page too - meant b431 as well lol NOT 341...It IS the right numbers, just not necessarily in the right order lolJohn E

LOL! I'm usually a stickler for avoiding typos. I just hope HIFI is aware this issue is in the latest and greatest beta build 431, and gets around to solving it. I'm surprised more people are not reporting this with DWC enabled, its a very serious problem. Hence, I have switched DWC off and put FSUIPC smoothing back on, and ATIS is reliable again, and no more contrails from AI aircraft on the ground in summer (heck, should be no contrails in ANY season :(;> )