aerocats
I didn't care for the autopilot on the BAE146 either. It hunted in level off.
The MD80/DC9 (actually they are both DC9), if you look carefully as the runway is taken, just before the takeoff comences, both elevators go to full nose down.
There is a hydraulic ram which, when the yoke is full forward, pushes both elevators to full nose down. Full forward yoke is usually done to make the elevators symmetrical and to test the hydraulic ram.
this design feature is to facilitate stall recovery at very low airspeed or when the tail might be blanked.
I am trying to think of something good about the BAE146.
play final jeopardy theme ad nauseum.