if you go to the AIM: 1-19-1, d. 1.
(b) Aircraft using GPS navigation equipment under IFR must be equipped with
an approved and operational alternate means of navigation appropriate to the
flight.

So basically you MUST be able to complete the flight without GPS, so you'll
probably need a VOR (checked) to be able to comply with that.


"Michael 182" wrote in message
...
I was told by an avionics guy that if a plane has VOR's they must be
accurate to file IFR, even if I file /G.

FAR 91.171 says "(a) No person may operate a civil aircraft under IFR
using
the VOR system of radio navigation unless the VOR equipment of that
aircraft..."

I'm not debating the logic of having VOR's that are accurate, and I'm
getting mine adjusted - but it seems to me if my means of navigation is an
IFR certified GPS I do not have a legal responsibility to pass the VOR
check. Am I right?

Michael