The difference is that a VOR outage affects only that VOR, so a workaround
exists using other VORs and the same equipment in the aircraft. A GPS outage
affects the system, at least within an area, so there are no alternative
stations to tune to for a work-around.

C J Campbell wrote:

I might point out that VORs are also inoperative at certain time in certain
regions. The Mc Chord VOR has not worked in over a year, despite it being an
important airway intersection. So what are you suggesting we use for backup
navigation systems for the VOR?

--
--Ray Andraka, P.E.
President, the Andraka Consulting Group, Inc.
401/884-7930 Fax 401/884-7950
email
http://www.andraka.com

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