Are handheld GPSes becoming a defacto primary nav source?

wrote in message
. ..

I raised this same issue with my flight instructor when taking IFR
lessons. He explained that although it's not permissable to FILE
an IFR direct route that requires GPS without having a certified
unit, it's OK to request "direct" if I have my hand-held and I'm in
radar contact. So now I always file a route that meets NAVAID
requirements and request "direct" once established on the filed
route. I just let the controller know that "I have GPS aboard"
and my request has never been denied.


Your instructor is wrong, there's nothing that prohibits filing an IFR
direct route regardless of the status of your nav equipment. Whether or not
the controller can clear you on such a route depends upon radar coverage,
but if he can clear you direct once you're airborne he can also clear you
direct when you're still on the ground.