Due to differences in fs9 to fsx,
I've aliased the 2d panel from the swissair dc10 to the tu154, on Ivan's advice I've altered the aircraft.cfg. from autopilot 0 to autopilot 1. and the default Vs from 100.0000000 to 1600.000000
The plane now functions fine.
However the heading hold on the autopilot, when set E.G. turned from 360 to say 007, and clicked on, does not turn the craft. you have to click it off turn the plane manually then click it on to level off on the new heading.
I've looked again in the .cfg file but there is no specific in the autopilot section for heading hold selector.
Any ideas anyone??