Binghi
More research:
The ATLAS Proposal envisages a Backup Network of ground based radio navigation aids which would provide an alternative navigation capability for GNSS capable aircraft should GNSS fail.
2.2 The composition of the Backup Network was chosen by considering operational factors such as navigation requirements, the regulatory structure, current aircraft avionics fitment, geographic position of aids to airports and the capabilities of airports. Based on these factors, a list of 103 NDBs, 45 VOR and 58 DMEs was established which was designated the “Backup Network”. It should be noted that the Backup Network was not chosen based on equipment condition but rather on the factors listed above.
ATC staff reductions? Why would having more aircraft in the system, showing on the same TAAATS screens, reduce staff. And, was not TAAATS going to do that like all you beaut new systems 