October 12, 20196 yr Hi All, it happened recently a couple of times that while flying enroute the plane stopped tracking the route and began turning around in circles with varying radius around the point where the anomaly happened. Nothing special to report, in both cases it was an overseas flight EU to US and when the issue happened (5-6 flight hours already done) I was not sitting at the PC, just discovered it when I sat back again to look at the flight status- AP LNAV VNAV AT on, normal conditions so to say, no messages or other evidence. I simply disconnected and reconnected AP and the plane started again tracking correctly the route.I have a screenshot captured on Google Earth where the odd flight path is shown (FSX Google Earth Tracker utility was running) but I don't have a web site to post it... Any ideas on the reason for this behavior ? As it happens rarely and randomly it's not really easy to spot it when it happens or even plan for spotting it ! Many thanks in advance for any hint you may offer ! Regards, Aldo
October 12, 20196 yr If you have the turbulence settings up too high, or if you are using aggressive time acceleration (>4X) the plane can start to oscillate laterally...it can get wild enough to miss a waypoint and then it will try to circle back to it. PMDG has some guidance on how to set up weather add-ons to prevent this from getting out of hand, and their auto-acceleration works pretty well to detect and reduce acceleration temporarily when things get unstable. Bob Scott | President and CEO, AVSIM Inc ATP Gulfstream II-III-IV-V Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090 Samsung 55" JS8500 4K TV@60Hz, 3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090 Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus, TM TCA Officer Pack, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case
October 12, 20196 yr Author Thank you for the prompt comment, I wasn't using acceleration. How can I reduce turbulence settings ? Thanks
Archived
This topic is now archived and is closed to further replies.