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Hi Dean,
I'm not an expert, but do have many hours in a small plane. Most all small
aircraft are equiped with a Gyro Compass. While most primary navigation is done
with GPS, the Gyro compass is a good back-up. I was planning on using a
Gyro compass. The downside to this is that it needs to be set against a magnetic
compass while on the surface (I believe) the gyro will maintain heading for
quite a long time without the need for a magnetic reading. They will precess (
change heading reading slightly due to gyro bearing friction) however a good one
will run for an hour or so without changing more than 5 degrees or so if my
memory serves. Anyway that is what I intend to use due to simplicity and cost,
using this along with dead reckoning.
Best Regards,
Jim Kocourek
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