A/C goes nose up when activating autopilot
After takeoff, i go into a climb and when I enable the autopilot, it should usually set the current vertical speed as climb rate. When I activate the A/P, the aircraft takes his nose up extremely (about 5000ft/min climb rate) until i manually switch to V/S mode and adjust the climb rate. How can i prevent this, it is really annoying.
I have done experiments and was able to isolate the exact nature and possible fix for the AP pitch up bug.
The issue goes as follows and can be easily reproduced even on the ground:
Problem: The internal variable used by the AP to track the pitch trim position does not update while AP is off.
Symptoms include:
Engaging the autopilot in flight conditions where the pitch trim is set significantly far from neutral (such as, during late climb near
