"Roger Halstead" wrote in message
...

Here I have basick RNAV and it doesn't even have a GPS input.
Strictly the old KNS-80, but it is RNAV ... over here.

We have one too, and it bought us an exemption for a few years. But it
doesn't meet current B-RNAV requirements for two reasons:

1) Its VOR is no longer approved for IFR use in Europe, since it doesn't
meet FM-immunity requirements -- I think they made a filter kit for the
upgrade to FM immune, but its cost was a serious fraction of the cost of a
TSO-C129a GPS!

2) B-RNAV equipment has to have a waypoint database, so that when they sent
you to FOOBA the nav kit knows where you're going, even if you don't.

Julian