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Old 1st Nov 2010, 16:01
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maodun
 
Join Date: Oct 2010
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Can INS provide TRUE Headings at 90 degrees North ?
“The INS/IRS may be used at any Latitude from 90 degrees North to 90 degrees South to reliably provide TRUE Headings and Tracks. It is completely independant of Magnetic Variation.”There is no "true NORTH" at 90 degrees North,how provide true heading?
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