Still means I have to consider them deviating from that track, and they do, whatever you might think.
But surely any aircraft can deviate from that track - whether it is a brand new 737, the Apollo 11 lunar module (which had two INSs), or my TB20
Any box of tricks that can do LNAV and drive your flight director is now a FMS.
Well, yes.
What is an FMS? It is the principal user interface for the navigation sources, with other goodies like fuel metering, loading, and whatever other stuff I know nothing about. Apart from the goodies it is not significantly different from a high-end GA GPS from a decade ago (not Garmin though).
But we are getting nowhere, chaps.
All that M609 is basically saying, if I understand him correctly, is that equipment in the old Tupolevs
has improved.
You still do not need PRNAV to
autofly a programmed lateral track Shall I paste my last post at this point, again?