the coastal area of Maron beach in the West Semarang district, which is prone to flooding and abrasion. Central Java Government announced plans to expand the airport in 2004 which include the extension of the runway from 1,850 m to 2,560 m. On 17 June 2014 Angkasa Pura I and military officials signed an agreement allowing the use of military land for 30 years and implementing the expansion project. New terminal On 17 June 2014, groundbreaking was done to build a new terminal for the airport. On 6 June 2018, the new terminal was opened for the public. It is the first floating terminal in Indonesia, which has an area of 58,652 square metres, nearly 10 times larger in size than the old terminal. After the new terminal was opened, the old terminal was returned to the army. The new terminal is also equipped with three jet bridges. The new terminal is designed on an eco-friendly theme, to register the terminal for green building certification. The unique passenger terminal built on top of a swamp, set to turn the airport into Indonesia's very first floating airport. The construction of the new terminal uses Earth-conscious materials and makes use of its surrounding swamps. The new terminal mainly uses glass materials to acquire more natural lighting inside the terminal, which saves electricity. Another eco-friendly design element is the airport's "reverse osmosis" technology to provide clean water by using rainwater and seawater, which is processed in a groundwater tank located underneath the airport terminal. There are water ponds around the airport that provides the raw material for osmosis and control water levels to prevent flooding during the rainy season. Solar cells also contribute to the airport's street lighting. The new terminal has an interior garden, as well as a mangrove forest. There is a multisensory waiting room specifically for autistic children, which is equipped with floor and wall mattresses, balls, beanbags, aquatic bubble tubes, colour changing LEDs, laser fingers, and vestibular boards. The multisensory room is the first-ever sensory room at any Indonesian airport and also the first in the Asia-Pacific. Airlines and destinations Passenger Cargo Statistics Accidents and incidents On 1 May 1981, Vickers Viscount 832 PK-RVN of Mandala Airlines carrying 44 passengers and crew was damaged beyond economic repair when it departed the runway on landing, causing the starboard and nose gear to collapse. On 18 October 1992, Merpati Nusantara Airlines