The Flight
Frederick Valentich, a 20-year-old with about 150 hours of flying time, took off from Moorabbin Airport, Melbourne, on the evening of October 21, 1978, in a rented Cessna 182L, bound for King Island across Bass Strait. At 7:06 p.m. he radioed Melbourne Flight Service to ask whether any aircraft were below 5,000 feet in his area. Told there were none, he reported a large aircraft with four bright lights passing over him.
The Transcript
Over the next six minutes Valentich described the object playing with him, approaching at speed, orbiting above him, and showing a shiny metallic surface and a green light. "It's not an aircraft," he said. He reported his engine rough-idling, then: "That strange aircraft is hovering on top of me again... it is hovering and it's not an aircraft." The transmission ended in seventeen seconds of a metallic scraping sound. He was never heard from again.
The Search and the Verdict
A four-day air and sea search found nothing. The Department of Transport's 1982 report could not determine the cause and listed the presumed fatal accident as unexplained. In 1983 an engine cowl flap thought to be from a Cessna 182 washed up on Flinders Island, and researchers have since claimed further wreckage; nothing has been definitively tied to Valentich's aircraft.
The Explanations
The most-cited explanation is spatial disorientation: an inexperienced pilot at dusk over water, flying inverted without realizing it, seeing the reflections of his own lights in the sea as an object "above" him before flying into the water. On that night Venus, Mars, Mercury, and Jupiter were bright in the western sky, which could account for the four lights. Others propose a staged disappearance, for which no evidence has ever emerged, and the UFO reading he gave himself in his last words.
Frequently asked questions
What happened to Frederick Valentich?
He vanished with his Cessna over Bass Strait, Australia, on October 21, 1978, minutes after radioing that an unidentified object with bright lights was hovering over him. No confirmed wreckage or body has been found.
What is the most likely explanation for the Valentich case?
Spatial disorientation at dusk over water, possibly flying inverted and mistaking the reflection of his own lights for an object, on a night when four bright planets were in the western sky. The official inquiry left the cause undetermined.