[cmurf]

I'm a pilot and wouldn't consider them autonomous. In the most sophisticated systems, you can plug in a fairly complex route to destination but there's a disconnect in automaticity when transitioning from cruise to approach. There are standard terminal arrivals, but they all assume contact with ATC for specifics, and in the case of lost communication in instrument flight you're expected to use your best judgment for ambiguous sections of the route clearance. Autopilots don't have judgment, and they also can't do two way communications either, so they're not able to accept ATC clearances directly, a pilot has to do that. So yeah not autonomous.