wrote in
link.net:

My two cents worth: any autopilot that acts in that manner is probably
best not used for "coupled" approaches. I put "coupled" in quotes
because a truely coupled approach would be independent of the heading
bug once the localizer has been captured.

The kludged-up situation you describe could be hazardous during
demanding circumstances.

I have to agree. If the heading bug is making a difference in the track,
then it isn't a fully coupled approach.

This all does bring up one important point, though. It is very, very
important to know exactly how the autopilot you're using works, and how it
does everything it does. If you don't know, then you're getting into
dangerous territory. Using an autopilot when you don't know how can kill you
very, very quickly.

--
Regards,

Stan