The striking Hong Kong International Airport, IATA code: HKG, is colloquially known as Chek Lap Kok Airport being built on the island of Chek Lap Kok by land reclamation, and also to distinguish it from the overcrowded and capacity constrained former airport, Kai Tak in Kowloon. The new HKIA took six years and US$20 billion to build. When it opened on July 6, 1998 at 6:25 am, Cathay Pacific flight 889 was the first commercial flight to land at the airport. The architects of the striking terminal are Foster and Partners. However, on the first day of opening and for months afterword, the airport experienced almost crippling difficulties particular with cargo and flight information centers. After that discouraging start, Hong Kong International Airport recovered and has won eight Skytrax World Airport Awards for customer satisfaction in eleven years. HKIA ranked second and third in 2009 and 2010 respectively for the Skytrax World Airport Awards, and has also won the Skytrax World Airport of the Year 2011. Singapore and Seoul are its closest competition in Asia in terms of being a world class connecting hub. HKIA also operates one of the world's largest and most visually striking passenger terminal buildings. It was the largest when it opened in 1998. Terminal 1 of the HKIA is currently the third largest airport passenger terminal building in the after Dubai International Airport's Terminal 3 and Beijing Capital International Airport's Terminal 3, a title it held until 2006. In 2007, HKG began the construction of a two-storey North Satellite Concourse which opened in December 2009. This concourse was designed for narrow-body aircraft and is equipped with 10 jet bridges. There is a shuttle bus service between the NSC and Terminal 1 every four minutes. Due to be finished by the end of 2015, A new 'midfield concourse' is being built between the two runways. This will include 20 aircraft parking gates, three of these will be wide enough to serve the Airbus A380 and serve for an additional 10 million passengers annually. Passengers will reach the concourse through an extension of the underground ‘automated people mover' – a driverless train system which serves Terminal 1 and Terminal 2. HKIA is the primary hub and headquarters for Cathay Pacific, Dragonair, Hong Kong Express Airways, Hong Kong Airlines and Air Hong Kong. As of December, 2011 about 90 airlines operate flights from the HKG to over 150 cities across the globe. It handled 50,348,960 passengers, making it the 11th busiest airport worldwide by passenger traffic. It also surpassed Memphis International Airport to become the world's busiest airport by cargo traffic. It has 2 parallel runways in operation, both measuring 12,467 feet long: 7LR / 25LR. HKIA is noteworthy for its inter-city check-in halls in Hong Kong Central and Kowloon where passengers can check their bags before boarding the high-speed rail link that whisks passengers to/from the city center in under 25 minutes. Also, HKIA was the destination of the first revenue passenger flight of the new Boeing 787 Dreamliner on October 26, 2011.