Thread: Why The Hell... (random rant)
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Old April 4th 07, 08:45 AM posted to rec.aviation.student,rec.aviation.piloting
Mxsmanic
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Default Why The Hell... (random rant)
writes:

You got a true north compass in your airplane?

Both GPS and inertial navigation platforms can easily determine true north.
In fact, they work with true north, and must apply an unpredictable conversion
factor to true north to get current and local magnetic north.

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