Hi all,
I’m seeing pitch oscillations (“bobbing”) during step climbs in the PMDG 777. For example, climbing from FL300 to FL320, it climbs normally at first, but in the final stage it starts pitching up and down very erratically while trying to reach the selected altitude. It does eventually hold altitude, but the last part of the climb is quite unstable, even though VNAV shows it as achievable.
The aircraft is around 300T GW, with OPT ALT is above the step climb alt. I’m using VNAV/LNAV with economic speed, realistic turbulence enabled, and I’ve already turned off AI auto-trim assistance.
Thanks!
Thanadee