Sure. The first N years you'd want to have an operator (pilot) onboard to handle edge cases. But... if you already have an operator, you can fly to any existing

Sure. The first N years you'd want to have an operator (pilot) onboard to handle edge cases. But... if you already have an operator, you can fly to any existing airport, and analyze the unplanned autopilot disengagements. Thus, you can start right now, no need to build new airports.