 In 2009, AVSIM planned to hold the convention in Dayton, Ohio from September 4 until September 6, at the Wright-Patterson Air Force Base.However, due to poor advance registrations, it was cancelled.The main focus of the website is providing additional content that users can use within a Flight Simulator, such as aircraft in addition to default planes, scenery, modified airport files, additional AI (artificial intelligence) aircraft (Simulator-controlled air traffic) and programs which modify all of the above.