Again, I am NOT asking about what is legal, or certified, or anything else.. I am just asking about the physical capabilities of the Skyview system. I have a Skyview HDX with GPS 2020, and I am installing a VAL NAV 2000 VOR/ILS receiver connected to it. Clearly I can fly an ILS to ILS minimums with vertical guidance.
What I am asking is whether the Skyview hardware/software CAN (will ALLOW me to) create, in the SkyView, a flight plan using GPS waypoints (ARTCC named waypoints, radial/DMD defined waypoints, User defined waypoint, Lat/Longs, whatever), for the enroute portion of the flight and transition to the VAL NAV 2000 controlled published ILS approach upon arrival at IAF?
To discuss the legality anyway... and remember, I would legally be declaring that my VOR receiver (combined with GPS distance), was my "primary" navigation device...
I'm not 100% positive, and I confess I don't actually remember doing this, but I think, technically, as far as legality is concerned, for the enroute portion of IFR flight plan back in the days before GPS, you could just file from one VOR radial/DME point to another, you did not HAVE to file along published defined jet routes and VR routes. But few did that because it was harder to navigate and also, (perhaps), because ATC back then wanted more control over the grouping, clumping together, and flow of commercial traffic. And I don't think you legally needed to have visual contact with the ground to do that.
If you think about the last leg prior to the approach of most flight plans back in the day, they went from a named point, (a VOR/VORTAC or a radial/DME from a VOR), to an IAF, which was generally a VOR/VORTAC itself, but could be radial/DME from a VORTAC or the intersection of two VOR radials). In the second case, that's in essence the exact same thing. That leg was not just flying along a VOR radial, it involved using the changing displayed radial from two VORs, or the changing radial/DME from a VORTAC, to navigate.