Don't ever call me a lawyer....but,
AIM 1-1-19(d)1(b) states..
"Aircraft using GPS navigation equipment under IFR must be equipped
with an approved and operational alternate means of navigation
appropriate to the flight."
and AIM 1-1-19(d)1(e)2 states..
"GPS domestic en route and terminal IFR operations can be conducted
as soon as proper avionics systems are installed, provided all general
requirements are met. The avionics necessary to receive all of the
ground-based facilities appropriate for the route to the destination
airport and any required alternate airport must be installed and
operational. Ground-based facilities necessary for these routes
must also be operational."
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.

I could have sworn this was brought up here, or in one of the trade
magazines lately - that you aren't even supposed to file over a VOR
that is OTS even if you're RNAV/GPS equipped.

Chris

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Steve Bosell for President 2004
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