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Airspeed Fluctuations

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I have noted that while using ActiveSky 6 that I am experiencing some severe airspeed fluctuations. I have seen my speed jump from 290 Knots IAS at FL320 to around 390 Knots IAS then down as low as 220 Knots IAS all within about 1-2 minutes. This happens on nearly every flight and on one occasion it resulted in a stall. Is this normal? Or do I need to do some additional tuning on ActiveSky 6.Current system is custom built:Gigabyte GA-K8NSC-939 w/AMD Athlon 64 3000+ and 1MB DDR400 memoryRadeon X850 AGP Card with 256MB DDR3 MemoryOnBoard Sound & Ethernet500W Power SupplyWindows 64 XP Pro, currentFS2004 with patchActiveSky 6 (Upgrade from ActiveSky Enhanced)Abacus USA Extreme LandscapeAbacus World Extreme LandscapeThanks much for any pointers you can give me.David Kluempers

In fact I just checked and noticed I am using 3.51, I am downloading and purchasing it tonight. I am also posting my ASv6 file at the end of this message.Thanks much for the info, I will try the 3.53 update and see how it works out.David KluempersThe following is my ASv6.ini file//ASv6 configuration file Build 441[General]WindowPosX = 504WindowPosY = 504DefaultWeatherFolder = C:Program Files (x86)Microsoft GamesFlight Simulator 9ModulesASv6SuppressionCeiling = 10000SurfaceWindLimit = 10FS9Path = C:Program Files (x86)Microsoft GamesFlight Simulator 9PersonalAppDataFolder = C:Documents and SettingsDaveApplication DataCloudLayerLimit = 5LocalSuppressionRange = 100MinimumVisibility = 0MaximumVisibility = 59LastPlanFolder = NONEAutoVasFrequency = 30AutoVasStrength = 30TurbulenceFrequency = DefaultStartupLocation = KSEADefaultGraphicsFullTheme = DefaultGraphicsCirrusTheme = AutoSubmitGraphicsTheme = TrueIncreasedWake = FalseDisableWindsAloft = FalseForcePrimaryServer = FalseForceSecondaryServer = FalseFavorCumulus = FalseForceRoutePressure = FalseForceLowestCeiling = TrueUnpauseOnReadyStatus = FalseForceTstormsWithCB = FalseAutoSetFSTime = TrueIgnoreFSLocationUntilReady = TrueAutoConvertPlanFiles = TrueAutoRefreshAI = TrueDisableVisGraduation = FalseForceRouteAloftTemp = FalseOfflinePlayback = FalseEnableVAS = TrueAutoGenVAS = TrueForceDestinationWeatherZone = FalsePreventIcing = TrueOnlineUpdates = TrueExtendedDestinationWindsForce = FalseDisableAllGroundUpdates = FalseGlobalWrites = FalseDepictFS9HazeLayer = TrueExtendTstormLayers = FalseDisableDirectWindControl = FalseVoicePlayback = FalseLocalSuppression = TrueStartupSound = TrueDisableGroundUpdates = FalseUseProxyServer = FalseFogLayerGeneration = TrueUpdateSuppression = TrueOvercastEnhancement = TrueIgnoreFSReadyStatus = TrueFSUIPCWindSmoothing = TrueLimitSurfaceWinds = FalseLimitCloudLayers = TrueAutoGlobalWriteToggle = TrueRainWithTS = TrueDisableUpperLayerGeneration = FalseVisibilitySmoothing = TrueDisableMessages = TrueAutoTimeZoneDetection = TrueUpdateInterval = 10VATSIMData = TrueZuluConversion = -10AloftPredictability = 100WindDriftRate = 0MaxCloudThickness = 10000MinStratusSeparation = 7000TAFProcessing = FalseEnforceVisibilityLimits = TrueWakeTurb = FalseStartPaused = FalseUseSystemTime = TrueDisableCAVOKClouds = FalseProxyAddress = NONE

FSUIPC 3.51 was definetly a problem. You should be all set once you get 3.53.

Dave Paige

I have updated to 3.53 and everything looks good, flying from Cairo to Frankfurt for the past hour and no problems at all. I just saw that a service update was released, I will get that and install after the flight.Thank you all very much for you help. ActiveSky was well worth the money.David Kluempers

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