They get a digital signal from sensors, they need a digital output to determine if a plane is clear to land. Why do they want to incorporate human language at all? My guess, they are using the term Ai for pr reasons. Get signal from plane, determine best runway based on other plane locations, output result to screen. Technically marketing/pr can use the term Ai, easier and safer for everyone plus cheaper and better for environment and they can still jump on the hype train.