A number of people have complained of errors in their autopilot, with various resolutions.
I wonder if we could benefit by ‘detuning’ or biasing our autopilots slightly. There was just a thread on AvSig discussing the virtues of flying airways shifted 1 mile right of centerline. There have been proposals to have the FAA add this feature to FMS’s. The problem is the high accuracy of GPS puts everybody right on the centerline, so if someone is at the wrong altitude, splatto!
Of course the FAR’s require pilots to fly the centerline of airways under IFR, but still, leaving some margin of bias seems sensible. That goes for cruise, but in the approach you want to be right down the middle since tolerances are tighter.
So what exactly does that little adjustment screw in the front of the 55X do?