"Payload was the big driver for us. We knew what the Beluga XL had to be able to carry, and that meant making some changes.” Source: Airbus' Jean-Marc Passuello describing the differences between the Beluga ST and the new Beluga XL.
Air Traffic Control Specialist assigned to radar monitor the flight path of aircraft during simultaneous parallel (approach courses spaced less than 9000 feet/9200 feet above 5000 feet) and simultaneous close parallel approach operations.