Pilot Frederick Valentich, flying from Moorabbin Airport to King Island to pick up some crayfish, reported that a strange aircraft was "playing a game with him" and he wanted to know if any military planes were in the area.
Both men were puzzled as there was no known air traffic in the vicinity apart from the 20-year-old RAAF air training corp instructor's plane.
Mr Valentich reported that the unknown aircraft had four bright lights and had buzzed him a number of times at great speed.
He told Mr Robey the object was orbiting on top of him and "it's got a green light and is sort of metallic, like it's all shiny on the outside". Then it vanished.
http://www.theage.com.au/national/30-years-on-ufo-mystery-still-vivid-20081011-4yss.html