Re: Peruvian 757 crash -- possible cause reported

Date:         13 Nov 96 02:41:21 
From:         s_odle@earthlink.net (Scott Odle)
Organization: Earthlink Network, Inc.
References:   1 2
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In article <airliners.1996.2359@ohare.Chicago.COM>, agtabby@aol.com says...

>I own a gps that costs 300 bucks, and can display location, speed, and
>altitude with reasonalbe accuracy.  Is every airliner equiped with a gps
>now, and if so why not?

The thing to consider is the certification cost of installing GPS in a
transport category aircraft, its hundreds of times more expensive.  You small
$300 dollar unit may give you "reasonable" accuracy, but since it is not
certified it cannot be used as a navigation source.