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D1 Heading information (Read 1480 times)
Jul 22nd, 2013 at 3:22pm

EricW   Offline
Junior Member
I love flying!

Posts: 72
Am I correct in assuming that the "heading" information displayed on a D1 is actually the "magnetic track made good", in other words, the track over the ground which the aircraft is covering, reduced to a magnetic heading, rather than the actual magnetic direction in which the aircraft is pointing?

The implication of this would be that, if one was, for instance, on a long over-water flight, where there are no landmarks, you would need to pre-calculate the magnetic track required, as well as the required magnetic heading, to ensure that the D1 was taking you in the right direction.
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Reply #1 - Jul 22nd, 2013 at 5:40pm

Dynon Support   Offline
Forum Administrator
Dynon Employee
Dynon Technical Support

Posts: 13226
The D1 is GPS ground track. As you say, it's the actual magnetic track over the ground, not where the nose is pointed.

If you were doing a hand flight plan, you would just plan as if there were zero winds. It works exactly like a compass when there are zero winds to push the nose in a different direction than your path. When you calculate your flight plan, you are already doing this since you calculate your zero wind direction and then add a wind correction angle to it. Just don't do the last part Wink


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