MORE ON TECHNICALLY ADVANCED PANELS
I read your Avionics Bootcamp article on retrofitting to the FAA’s Technically Advanced Aircraft standard (July 2023 Aviation Consumer) and there are a few things worth expanding on.
One requirement is for a two-axis autopilot “integrated with navigation and heading guidance system.” You mention that “integrated” is a loose term, but in letters from the FAA, it means coupled to the GPS.