"Matt Whiting" wrote in message
...

Then why did you write: "It's a moot point anyway, whatever caused my comm
radios to go belly up will affect my nav radios the same way and I won't
be able to identify the holding fix."


I have two comm radios, they share no components, have separate antennas. I
use a headset but also have a hand microphone and cabin speaker. I have
auxiliary headset jacks that allow me to bypass the audio panel. What
single point of failure would disable both of my comm radios but not affect
my nav radios?