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Documentary going behind the scenes at some of the most frequented places on Earth, beginning with Hong Kong International.
The airport is sited on a man-made island in the middle of a typhoon zone and handles a fifth of the world's air freight, as well as 53 million passengers every year.
The film examines the people and the processes that keep the airport functioning, including the automated tracking devices holding records of where every package is stored in the six-storey warehouse, and the work of the air-traffic and ground controllers.
Cast team for World's Busiest (1/4).
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Previous broadcasts on TV
Broadcasts in 2019
On Channel 5
13/01/2019 at 17:40