Coupled approach?

In article . net, Ryan
Ferguson writes:

Clearly, setting the heading bug 10 degrees off the desired course was a
mistake, but the manual doesn't even begin to talk about the best way to
correct the mistake. Just resetting the bug to the right setting
resulted in course oscillations. What I'm trying to figure out is what
might have been a better course of action.


Roy,
The Century IIIB in my 79 Archer gets its "main" info from the heading bug,
even when in the NAV position. The Nav instrument then adds a correction of up
to about 30 degrees. I try to get the heading bug ( and the DG) set to the
correct values before the approach. However, if I correct the bug and get a
"course turn" I find that the NAV instrument rather quickly removes its
"correction" and you are back on course within 10 or 15 seconds. Flying 10
degrees off course for 10 seconds doesn't really give you much error of
position tho if on an approach in the clag, it might seem like a lot. Moral,
don't make changes on final.

Chuck