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Thread: A/P missbehaviour

  1. #1
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    A/P missbehaviour

    hi guys,

    during climb-out from an airport, i noticed the auto-pilot pitching up and down extremely unusual.
    in approx. 1500 ft the a/p is switched "on" and another higher altitude is selected with e.g. open-climb mode.
    the a/p steers the flight-director to more than 20 degrees nose up input ! the speed, as a normal behaviour, starts to
    fall down to lowest selectable speed and before reaching, the a/p tries to catch it by lowering the aircraft nose
    again to the opposite of more than 10 degrees nose down ! even with v/s-mode selected (e.g. 2000 ft/min) the a/p
    reacts this way. (no weather, no winds, no turbulence, 55.0 tons zfw, 5.0 tons fuel balanced)

    this behaviour happens not all the times, e.g. i did some descents from high altitude and some climb-outs, where i could not
    notice this strange appearance. but than the a/p reacts again this unusual way.

    what might be the probleme ??

    thanks, fabiano

  2. #2
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    Re: A/P missbehaviour

    Sounds like you are flying a 737Max!
    Barry

  3. #3
    150+ Forum Groupie masterp's Avatar
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    Re: A/P missbehaviour

    Hi Fabiano
    Make sure your FSX/P3D archived 30+ FPS

    Vu

  4. #4
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    Re: A/P missbehaviour

    @ barry
    ) yes, letīs have a closer look

    @vu
    thanks vu, it has a lot more than 100 fps. maybe it comes from trimming, but all values are in normal range ?

  5. #5
    2000+ Poster - Never Leaves the Sim
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    Re: A/P missbehaviour

    In that case limit the fps to 60fps.

  6. #6
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    Re: A/P missbehaviour

    merci beaucoup