Of course, if we look back in time (say, ten years or so), we find the following...
Lockheed L1011.
Equipped with Honeywell HT9100 dual FMS/GPS units.
Fully certified for, enroute, terminal, approach (...ie; NPA).......and they worked to perfection.
And, still do.
Last edited by 411A; 9th June 2008 at 07:54.