Chennai International Airport is the primary airport serving the southern Indian metropolis of Chennai. It is the fourth busiest airport in India in terms of passenger traffic for the year 2014 and the third busiest in terms of international traffic. The airport is spread across the suburban areas of Meenambakkam, Pallavaram and Tirusulam with passenger entry at Tirusulam and cargo entry at Meenambakkam. The IATA code MAA for the airport is derived from the former name of Chennai, Madras. The domestic and the international terminals are named after former chief ministers of Tamil Nadu, K. Kamaraj and C. N. Annadurai respectively. It is the first airport in India to have international and domestic terminals adjacent to each other. The airport is the regional headquarters of the Airports Authority of India for the southern region of India comprising the states of Tamil Nadu, Andhra Pradesh, Karnataka, and Kerala and the union territories of Puducherry and Lakshadweep. As of 2014, the airport handles 13.81 million passengers annually and about 341 aircraft movements a day. The airport is expected to reach saturation by 2016–17, necessitating the construction of a second international airport at Sriperumbudur.