Page one of the Department of Transport report on the disappearance of Frederick Valentich and his Cessna Australian Department of Transportation, Public domain, via Wikimedia Commons
Pilot Frederick Valentich, 20, radioed Melbourne Flight Service that a large unidentified object was hovering over his Cessna 182 above Bass Strait, then the transmission ended. Neither he nor the plane was found; the Department of Transport report said the cause was not determined.
