A couple of blogs ago, we examined avionics for old guys, but what about avionics for old airplanes? As the fleet ages along with the pilots who own it, a not-that-old airplane these days is one built in the early 1980s. As an inveterate observer of panels, I always peer inside the windows of airplanes to see what the owner has done with avionics upgrades. In a way, it's a peek into pilot's view of flying and perhaps a core bore into the thickness of his wallet.
This is a companion discussion topic for the original entry at https://www.avweb.com/ownership/avionics-for-old-airplanes