Case study · CASE-075 · Pilot disappearance during reported encounter
Valentich disappearance
OpenOpen / unexplainedWhere Bass Strait, AustraliaWhen 1978-10-21
Case
- Overview
- Pilot Frederick Valentich radioed Melbourne air traffic control that an object was orbiting his Cessna 182 before contact was lost. The Department of Transport report found the cause "not determined".
- Investigative phases
- Department of Transport investigation; search; National Archives of Australia file release
- Reported phenomena
- Long object with lights near the aircraft
- Public evidence status
- Investigation report and radio transcript public
- Alternative explanations / caveats
- Spatial disorientation, hoax or suicide proposed
- Next research tasks
- Review NAA file B1497 V116/783/1047
- Last reviewed
- 2026-11-11
Assessment
- Event date
- 1978-10-21
- Source category
- Accident investigation; radio transcript
- Original data accessibility
- Yes
- Witness / instrument basis
- Radio transcript
- Corroboration limitations
- No wreckage confirmed
- Extraordinary claim assessment
- Cause not determined
- Current status
- Open / unexplained
- Priority research task
- Review NAA file
- Lead source ID
- SRC-V86-41
- Last reviewed
- 2026-11-11
Evidence (1)
Documents gathered (1 line of evidence)
- Australian Department of Transport investigation: cause not determined Primary record linked