A Boeing 747-400 flights to the most dangerous airport in the world. Kai Tak VHHX was located in the north of Kowloon Bay in Kowloon, Hong Kong. The vicinity was surrounded by rugged mountains. Less than 10 km to the north and northeast was a range of hills reaching an altitude of 2000 ft. To the east of the runway, the hills were less than 5 km away. Immediately to the south of the airport was the Victoria Harbour, and further south was Hong Kong Island with hills up to 1700 ft. There was only one runway at Kai Tak, oriented at 136.1 degrees and 316.1 degrees, hence its name 13/31. The runway was made by reclaiming land from the harbour and had been extended several times since its initial construction. Final length of the runway was 3390m. Landing at Kai Tak could be both challenging and spectacular. Depending on the landing direction, the aircraft might need to pass over densely populated areas in Kowloon at low altitude. At the northern end of the runway, buildings up to 6 stories tall rose just across the road. The other three sides of the runway were surrounded by the harbour. Aircraft were literally landing in the harbour within the city; some passengers claimed they could even see the flickering of televisions through apartment windows as they approached the airport at low altitude.