Minot Opdyke wrote:

Hi all,
My question of the day is: using _/http://www.navfltsm.addr.com//_ i've done a lot of flying. But on some of the longer flights I'd like to try autopilot for heading/altitude (Cessna 172P) I'm usiing MacOS 10.3.9 and in the autopilot setting, under Heading, there is True Heading and Heading Bug. What's the difference and how are they used. When I try and put in the magnetic heading I want to fly, the plane just goes in circles. Also, does the NAV 1 CDI work and how? again, I just go in circles even with the NAV 1 set to a VOR. Any help would be appreciated,


I believe the default C172 impliments a KAP140 autopilot unit which overrides the autopilot menu. You have to interact with it via panel clicks. I haven't fully figured it out, but it will act as a wing leveler, heading bug hold, altitude hold, (rate of climb hold?) and I think it will track the CDI/GS although I haven't dug in far enough to figure out how to do this.

Regards,

Curt.

--
Curtis Olson        http://www.flightgear.org/~curt
HumanFIRST Program  http://www.humanfirst.umn.edu/
FlightGear Project  http://www.flightgear.org
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