Type: Official Investigation Report
Source: Commonwealth of Australia, Department of Transport
The official aircraft accident investigation summary for the disappearance of Cessna 182L VH-DSJ on October 21, 1978. The report documents the planned flight, aircraft details, the final radio communications with Melbourne Flight Service and the circumstances of the disappearance. It records the location and cause as undetermined and the presumed fatal status of the pilot. The report establishes the documented aviation incident but does not identify the object Valentich described or conclude that a UFO caused the disappearance.