"Ingo K?hne" wrote in message
m...
Hello

I am not a real pilot, just interested in aviation and simulation. My
question is if the GPS with all its accuracy and worldwide
availability will soon replace all other navaids for IFR. So a little
provocative: who needs VORs and NDBs anymore?
It'll happen when there is a second fully operational GPS system in place.
This is part of the reason why the EU, are moving into launching their own
constellation. Since these will use a seperate frequency, it gets away from
the possibility of a single source jamming all the systems in use
(accidentally), or a single hardware failure removing the only navigational
source.

Best Wishes