Hammersley Holdings. Khancoban is one of many obscure Australian tiny airports. This is the only one on the east side of the Kosciuszko National Park and all who want to go through the park and see the highest Australian mountain, pass by the airport. Locals sense that and so the owner of this Cessna placed a card with a photo and a phone number at the local post office and offers scenic flights. However, the end of the summer did not look like the busiest time of year.