Re: "US could shoot down EU satellites..."

From: Alan Browne (alan.browne_at_FreeLunchVideotron.ca)
Date: 10/28/04 

Date: Thu, 28 Oct 2004 10:43:11 -0400

geo_splash_12 wrote:

> Alan Browne wrote:
>
>> Not neccesarilly. GPS uptake into the heavy airliners has been slow,
>> esp. for retrofits. GPS was introduced on the 777 when new, so all
>> 777's have dual or triple INS/GPS installations, but GPS was not
>> retrofitted into the 767/757's on the line. (I'm sure there are
>> exceptions, but simply not needed at all for aircraft that already had
>> dual or triple INS and full radio nav systems aboard already). I'm
>> not sure at what point GPS became standard on 757 and 767 new builds
>> (or which series), if at all.
>
>
> A Garmin 3+ works in an aircraft, and it would be sufficient to find
> your way to any waypoint that you previously surveyed. Atta and others
> did buy handhelds prior to 9/11, probably they also used them. They
> wouldn't need to understand these complicated aircraft navigation
> instruments and they had basic knowledge on how to operate an aircraft.

Most handhelds work pretty well on most aircraft.

I was answering the statement "...all the planes involved in 11-9 (9-11 for
USians) surely also had GPS equipment on board." of the prev. poster.

I don't know that the terrorists had handheld GPS at all during the flights, but
it would not be that much of a surprise. 

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