Hi Damian, I had a similar problem right now on a flight from Portland to Denver with a 777 Meljet, at an Atltitude of 35000 feet with mach 0.86, I first began to climb slowly, although the autopilot was set on 35000. shortly afterwards I was catapulted to 47000 feet and 645 kias ( indicated Airspeed)near Idaho Falls. The plane went into a severe stall, I recovered at 17000 feet altitude and I wanted to do an emercency landing in Idaho Falls. After I loaded the new flightplan and was cleared for landing I suddenly had a crash to Desktop, any ideas what could be the cause? The flight was done without online updates checked, with taf processing active, but online. (I have a DSL Connection) Mariosunshine//AS2004 configuration file[General]WindowPosX = 5055WindowPosY = 6600DefaultWeatherFolder = C:Archivos de programaMicrosoft GamesFlight Simulator 9ModulesActiveSky2004SuppressionCeiling = 20000SurfaceWindLimit = 10CloudLayerLimit = 10LocalSuppressionRange = 20OnlineUpdates = FalseExtendedDestinationWindsForce = FalseGlobalWrites = TrueVoicePlayback = TrueLocalSuppression = TrueStartupSound = FalseUseProxyServer = FalseFogLayerGeneration = TrueUpdateSuppression = TrueOvercastEnhancement = TrueRouteWindSmoothing = TrueLimitSurfaceWinds = FalseLimitCloudLayers = FalseDisableUpperLayerGeneration = FalseVisibilitySmoothing = TrueDisableMessages = FalseAutoTimeZoneDetection = TrueUpdateInterval = 45VATSIMData = FalseZuluConversion = -8TAFProcessing = TrueWakeTurb = FalseStartPaused = FalseUseSystemTime = FalseDisableCAVOKClouds = FalseProxyAddress = NONE

Sounds like maybe you have FSGenesis scenery mesh and/or land class installed. There's a known "bermuda triangle" area over that area where really bizarre things occur, including a CTD.In either case, I doubt it's AS2K4 related.J

hi, thanx for your answer, yes I have the mesh scenery from FS Genesis installed and it happens in the Saltlake City Area, what I don't understand is how a Meshscenery, which is pure elevation data can cause jumps in altitude and speed....anyone else with this problem and in the same area?mariosunshine