A/P missbehaviour

[Fabiano2012]

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

[Barrykensett]

Sounds like you are flying a 737Max!
Barry

[masterp]

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

Vu

[Fabiano2012]

@ barry
) yes, let´s 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 ?

[jeehell]

In that case limit the fps to 60fps.

[Fabiano2012]

merci beaucoup