"C J Campbell" writes:

I think it will take far less than 10-20 years to convince most of
the knee-jerk "Itcan'tbedone.Itwon'twork" crowd. The troglodytes
usually come crawling out of their caves when they find their
anti-innovation attitude is costing them business.

I don't remember any of that in this thread. People have suggested
that (a) GPS needs ground-based backup like VOR, NDB, or LORAN for
safety, (b) other countries have trouble relying exclusively on a
system controlled by the U.S. military, and (c) the transition will
take a while, but I don't remember any postings claiming that GPS
precision approaches cannot or will not work -- everyone seems to be
looking forward to them.


All the best,


David

--
David Megginson, , http://www.megginson.com/