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Old 15th Dec 2019, 11:26
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goeasy
 
Join Date: May 2002
Location: Kiwiland
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Yes it does mean that, as IRS navigation with DME/DME updating is reliable enough for basic GPS approach. The HIGH ACCURACY annunciation is all thats required.

Just as you can carry out a VOR or NDB approach when the aid is inop.
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