"Roy Smith" wrote in message
...
Wow, that last one is pretty strange. I often have an ILS frequency
loaded up, even if I'm not using it. The most frequent use I make of
the NAV part of the GPS/NAV/COM is to fly an ILS, so the last ILS flown
is usually what's left there. What is the logic behind requiring me to
change it to something else?

Many, if not all, IFR GPS units and or switching relay/annunicators have an
option (often wiring) to force the switching relay to NAV if there is a LOC
frequency selected. In the newer integrated units, this "relay" is inside
the box.

Mike
MU-2