When I'm flying the 747 freighter or PAX I have a problem.Sometimes I need info on my desktop and when I switch to desktop and I pop-up flightsim again my plane is descending or just turning like #### in to the limits. I run 2screens and ASV6. Is there maybe an option in FSUIPC or someting to lock the autopilot on track ?Regards Jorik

does this happen only when minimize to tray?If yes, i have no clue, if no, IE it does happen even when not minimized, you may have a faulty signal from your joystick, giving the AP the feeling you are in transparancy.I have had the same prob with the 747 and the 767 version 2, unplugging the joystick from the hub controler and replugging directly to the computer has definitely solved the prob.Hope this helps.Cyrille de LattreAsus P4P800/PIV 3 Ghz/2 Giga DDRAMATI X800 GT 256 MegWin XP SP2 / FS9.1 PSS Beta tester