2 Answers
How to apply magnetic variation over a long distance
Asked by: Mark Unruh 3529 views Flight Instructor, Private Pilot
So on a short cross country trip I have been teaching to correct for magnetic variation by using one of the isogonic lines that lies about in the middle of the leg or trip. Is there a rule of thumb on how often to correct for magnetic variation on a much longer trip, say like 800nm? Where we live in Texas they change only half of a degree per isogonic line and so that would be quite burdensome to fill a nav log out with all those small differences. Thanks
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