Dr
The thread commenced ex the defunct ADS-B thread where PCAS were dumped on Jabba. It wandered to WAAS and ADS-B via Sunny's thought.
Completely ignoring ADS-B and PCAS, the navaid replacement program now becomes significant as it will affect YOUR IFR costs.
Unfortunately the costs suggested by Dick were embodied in the JCP and if we are to examine the NAVAID situation the current CBA is the JCP CBA.
Perhaps we need a separate thread for that. But retention of NAVAID above and beyond the legacy group IS going to cost GA money and that's a fact.
However, there are still people without TSO 146 GPS who require alternates and NAVAIDS. NVFR gets by with TSO 129 but still needs alternates.
At what cost?