SkyPlaza was situated within Terminal 2. Terminal 2 was temporarily closed in November 2019 for expansion to provide departure and arrival facilities for the new satellite terminal from the three-runway system. Before its temporary closure most low-cost carriers and some full-service carriers had relocated their check-in operations to T2. T1 Satellite Concourse In 2007, HKIA began the construction of a two-storey T1 Satellite Concourse (T1S), previously known as the North Satellite Concourse, which opened in December 2009. This concourse was designed for narrow-body aircraft and is equipped with 10 jet bridges. The concourse has a floor area of and will be able to serve more than five million passengers annually. T1S was built so the airport could accommodate at least 90 percent of its passengers by aerobridges. It has two levels (one for departures and one for arrivals). A new Sky Bridge connecting Terminal 1 and T1S opened in November 2022, allowing passengers to walk above taxiing planes, saving time from taking the airport shuttle bus. Midfield Concourse On 25 January 2011, Airport Authority Hong Kong (AA) unveiled phase 1 of its midfield development project which was targeted for completion by the end of 2015. The midfield area is located to the west of Terminal 1 between the two existing runways. It was the then last piece of land on the airport island available for large-scale development. This includes 20 aircraft parking stands, three of these are wide enough to serve the Airbus A380 and cater for an additional 10 million passengers annually. Passengers reach the concourse through an extension of the underground automated people mover. A joint venture of Mott MacDonald and Arup led the design of the project. Gammon Construction undertook the construction work. The Concourse began operations on 28 December 2015, and the first flight that used it was the HX658 operated by the Hong Kong Airlines flying from Hong Kong to Okinawa. On 31 March 2016, the Concourse was officially inaugurated in a ceremony marking its full commissioning. Other buildings Cathay Pacific City, the head office of Cathay Pacific and Air Hong Kong, is located on the airport island. CNAC House, the office for Air China is also located in the airport complex, together with the Civil Aviation Department headquarters. HAECO also has its head office on the airport property. HK Express has its head office on the airport property, in what was previously the Dragonair