"SeeAndAvoid" wrote in message
.net...
There is an (a) under it that starts talking about Alaska, but then
goes on...."Ground-based navigation equipment is not required to be
installed and operating for en route IFR RNAV operations when using GPS
WAAS
navigation systems. All operators should ensure that an alternate means of
navigation is available in the unlikely event the GPS WAAS navigation
system
becomes inoperative."
Is that still talking about just Alaska? Dont know. It doesnt reference
an
FAR though. The AIM only says GPS can substitute for ADF or DME, never
says
for a VOR.


See AIM 1-1-20c.7. WAAS may be used as a stand-alone system anywhere in the
NAS.

GPS cannot substitute for a VOR.

The regulations refer to TSO numbers and say that the requirements of these
TSOs must be followed, effectively making the TSO a part of the regulation.