 The airport was established on 4 July 1958 and is operated by the Civil Aviation Authority of Nepal.The airport is capable of handling aircraft from the Nepalese Army Air Service.25 December 1999 - A Skyline Airways De Havilland Canada DHC-6 Twin Otter 300 (9N-AFL) crashed 5 minutes after take off from Simara Airport on a flight to Kathmandu.