With all the literal and figurative bells and whistles in todays cockpits, something as mundane as losing communications with ATC is rare. One reason is the stuff we have in the panel these days is a couple of light years ahead of even two decades ago in reliability. But loss of communications-going no radio, or Nordo- thanks to our installed avionics isnt the only failure mode we might encounter. In fact, your airplane and its equipment may not even be the problem.
This is a companion discussion topic for the original entry at https://www.avweb.com/flight-safety/technique/real-world-nordo