I have seen all four episodes now and whilst it was very interesting, the presenting style was poor and most of the time I felt like I was watching Blue Peter.
Kate Humble tried to shoehorn a lame reference to aviation into every link and that got very tedious very quickly.
I also didn't see why they needed to feature the control tower in every episode. I think we all understood how busy and pressured the job of ATC was after the first programme and Kate wandering around and speaking in hushed tones every single night seemed a waste of time.
It wasn't so much "Airport Live" as "Air Traffic Control Tower Live".