Ross Richardson wrote:
I have the 89/B and I do the same as Doug.

I also have an 89/B and I used to use track up for the same reason. Making
the line go perfectly vertical meant I was exactly on track. Then one time
I was flying with a pilot that claimed that when flying IFR he was taught
that north up was prefered to be able to more easily know where you are
in a complicated approach. I switched to north up expecting to just try
it out for a while and go back if I didn't like it. North up does turn
out to have one unexpected benefit for me. Most of my trips are east to
the beach and west back home. Since my display is much wider than it is
tall, I don't have to zoom out as far and still see what's ahead (and
behind). Also, keeping on course hasn't turned out to be a problem since
I have a VOR needle slaved to the GPS and if I switch to the CDI display
on the 89/B I get another CDI, but also a pretty responsive "actual
heading" number that I can turn to match the "desired heading" that gives
me the same comfort level that the straight up vertical line in track up
mode gave me.

Regards, Ross
C-172F 180HP
KSWI


Doug wrote:
I went to track up because if I loose vacuum, all I need to do is keep
the line pointed straight up in the GPS screen, and I am not turning.
Also, my unit, a KLN90B favors track up. I don't get an "airplane" icon
in the other track postions (I get a diamond).

But seriously, you can use the track up line as a poor man's localizer
needle. Try it and see.