when flying on AP at 10000 feet at about 480 knots the nose of the plane, in this case an Airbus A330-300, starts to move up and down like a ship heading into a head sea.
Speed increases and decreases as the AP tries to compensate for the sudden changes in altitude and speed.
Only when I disengage the AP does the plane level out and fly smoothly again.
Maybe someone can help me out here. Am I doing something totally wrong that I am not aware of 😳…? Or is it a software issue maybe?
I appreciate your help 😊
Plane: Airbus A330-300
Speed: about 480 knots
No spoilers, no flaps, 0% trim