"Steven P. McNicoll" wrote in message ink.net...

I see. After a failure that causes you to lose both of your completely
independent transceivers, and your transponder, you're confident of the
continued flawless operation of your other avionics because your other
avionics consist solely of a battery operated Garmin 196.

Sure. There's still a single point of failure on most singles. You may
have multiple radios, transponders, etc... but their all fed from the same
single electrical bus. A battery operated handheld (GPS or COM) has a
good chance of working, especially if you have spare batteries.

Back when I was using the hillbilly mechanics I had numerous failures of
the electrical system (due to their ineptitude at replacing the regulator/OVP
unit).