PPRuNe Forums - View Single Post - EGPWS - Required Nav performance for certification?
Old 24th December 2005 | 01:09
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superfrozo
 
Joined: Sep 2005
Posts: 181
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From: Paradise
Question EGPWS - Required Nav performance for certification?

Gents, quick question:

Does anyone know whether there is a minimum nav suite requirement to enable certification for EGPWS operation? Specifically, how much positional accurracy is required to validate the Digital Terrain Elevation Data?

Ie. Is a specific combination of INS & embedded GPS ?
...triple INS with DME/DME/DME updtating?
...or is it merely a maximum demonstrated drift rate combined with a required kit update rate???

I have done tech quiz searches with nothing specific addressing this topic, any info would be greatly appreciated.

Thanks in advance!
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