Re: Peruvian 757 crash -- possible cause reported

Date:         15 Nov 96 12:25:39 
From:         bentson@grieg.bentson.aa.net (Randolph Bentson)
Organization: Alternate Access Incorporated
References:   1 2 3
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In article <airliners.1996.2405@ohare.Chicago.COM>,
Reid Fairburn  <cr_king@cr_king.seanet.com> wrote:
>...  There are GPS units available and they are being slowly
>retrofitted to the older airplanes.  ...  Current Nav Systems
>work well but have limitations that GPS can lift.  ...  It will
>certainly help out in the future and should be standard equipment
>on all new planes.

For those who wish details, there's a publication titled "FAA's
Plan for Transition to GPS-Based Navigation and Landing Guidance"
dated Jul 1996 (no catalog number or other ordering information).
It outlines how the FAA intends to extend the GPS system to yield
accuracy and reliability sufficient to their needs.  Among other
things, it reports "The plan represents a balance, or compromise,
between the aircraft operators' desire to get maximum return on
investment in avionics for the exisiting ground-based systems, and
the FAA's desire to decomission the ground equipment...the plan
has been designed around a 10-year transition period..."

Randolph Bentson
bentson@grieg.seaslug.org