Re: Inertial Navigation ???

From:         Ron Parsons <>
Date:         17 May 2000 15:58:24 -0700
Organization: NASA Dryden
References:   1
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In article <>, "Chuck" 
<> wrote:

>What aircraft have IRS systems that compute themselves or receive
>updated position data? The ones I am familar with the IRS position is
>never updated once the system is put in NAV.

B-757 and 767 both update with DME/DME, VOR/DME or ILS/DME, and later 
ones use GPS.