Within Valentich
What did Valentich really report?
The final radio exchange is the strongest UFO evidence in the case, but it records a pilot's report rather than an identified object.
On this page
- Timeline of the Melbourne Flight Service exchange
- Four lights, green light and engine roughness
- What a radio call can and cannot prove
Page outline Jump by section
Introduction
The final radio exchange between Frederick Valentich and Melbourne Flight Service is the strongest piece of evidence in the entire Bass Strait disappearance. It is also one of the most misunderstood. The recording does not prove that an unknown craft was present, let alone that a UFO caused the loss of the aircraft. What it does prove is that, shortly before radio contact ended, Valentich sincerely reported seeing something he could not identify, described unusual lights and manoeuvres, and believed the object was close enough to affect his flight. [Wikipedia]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
For Tasmania’s UFO history, the significance of the call lies in its immediacy. Unlike many UFO stories that rely on memories recorded years later, this was a real-time report from a pilot flying towards King Island in Tasmanian airspace approaches. The exchange provides direct evidence of what Valentich said he was experiencing. The harder question is whether his description reflected an external object, a misperception, an aviation emergency, or some combination of the two.
Timeline of the Melbourne Flight Service exchange
The radio conversation lasted roughly six and a half minutes. During that period Valentich repeatedly updated Melbourne Flight Service about an unidentified object he believed was near his aircraft. [Tasmanian Aviation Society]tahs.org.auTasmanian Aviation SocietyMysteries of Aviation – Frederick Valentich and VH-DSJTaken from the official Air Transport Accident Board repo…
The key progression was:
- Valentich asked whether there was known traffic below 5,000 feet in his area.
- Flight Service advised that no known aircraft were operating at that level.
- Valentich reported seeing a large aircraft with bright lights approximately 1,000 feet above him.
- He said the object moved quickly and appeared to pass overhead.
- He later reported that it was approaching from different directions and seemed to be circling or “orbiting” above him.
- He described a shiny metallic appearance and a green light.
- He reported that his engine was running roughly.
- When asked to identify the object, he eventually stated: “It’s not an aircraft.”
- Radio contact ended after a period of unexplained sounds often described as metallic scraping or rubbing noises. [Wikipedia+2ABC News]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
What makes the exchange unusual is that the descriptions evolved over time. Valentich did not immediately declare a UFO encounter. Instead, he began by asking a routine traffic question and gradually became less certain that what he was observing was a conventional aircraft. [Wikipedia]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
Four lights, green light and engine roughness
Three elements of the transmission receive the most attention from UFO researchers and sceptics alike: the lights, the green illumination, and the engine report.
The four bright lights
Valentich initially described what appeared to be four bright lights resembling landing lights. That description can support more than one interpretation. Four lights are consistent with a distant aircraft seen at night, but they are also consistent with misidentified celestial or atmospheric lights when depth and distance are difficult to judge over dark water. The radio call itself cannot distinguish between those possibilities. [Wikipedia]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
The green light
The green light became one of the most famous details because several later UFO interpretations treated it as evidence of an unusual craft. However, critics have noted that aircraft navigation lights themselves include green lights on the starboard wing, and some investigators have suggested that reflections, orientation errors, or misidentification could account for the observation. The radio exchange alone cannot determine which explanation is correct. [Wikipedia+2Skeptical Inquirer]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
The rough-running engine
Valentich reported that his engine was “rough idling” and “coughing”. This is an important detail because it points to a potential aviation problem independent of any unidentified object. The transmission confirms that Valentich perceived an engine issue, but it does not prove the engine was actually failing. Pilots can misdiagnose sounds and performance changes, especially when distracted or under stress. Conversely, a genuine mechanical problem could have contributed to confusion and workload in the cockpit. [Skeptical Inquirer]skepticalinquirer.orgV: My intentions are, ah, to go to King Island. Ah, Melbourne, that strange aircraft is hovering on top of me again.Read more…
The radio call therefore establishes that an engine concern was reported. It does not establish the cause, severity or reality of that concern.
Why “It’s not an aircraft” matters
The most quoted line in the entire case is Valentich’s statement that the object was “not an aircraft”. The phrase carries weight because it came from a licensed pilot who was actively observing the object at the time. [Wikipedia]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
However, the evidential value of the statement depends on what question is being asked.
If the question is whether Valentich believed he was observing something unusual, the answer is yes. The transmission strongly supports that conclusion.
If the question is whether the object was objectively not an aircraft, the answer is different. The statement reflects a witness judgement, not an independently verified fact. Air traffic services had no radar confirmation of the object, no visual confirmation from another aircraft, and no physical evidence linking an unidentified craft to the disappearance. [Wikipedia]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
This distinction is crucial. Witness testimony can be compelling evidence of perception without being definitive evidence of the external reality that produced that perception.
What a radio call can prove
The radio exchange can establish several facts with reasonable confidence.
It shows that:
- Valentich was communicating normally at the start of the exchange.
- He reported observing an unidentified object.
- He described specific features, including bright lights and a green light.
- He believed the object was manoeuvring around his aircraft.
- He reported engine roughness.
- Contact ended abruptly shortly afterwards. [Wikipedia]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
These points are supported directly by the recorded communications and associated investigation records. They are among the strongest facts in the entire case. [The Black Vault Documents]documents.theblackvault.comtober 21st,1978 over the Bass Strait. I believe that the accident…Read more…
What a radio call cannot prove
The same evidence has clear limits.
The transmission cannot prove:
- That a UFO was physically present.
- That the object was extraterrestrial.
- That the object caused the disappearance.
- That Valentich’s engine was actually failing.
- That the unidentified sounds after the final transmission came from another craft.
- That his observations were free from misidentification or spatial disorientation. [The Black Vault Documents+2Skeptoid]documents.theblackvault.comtober 21st,1978 over the Bass Strait. I believe that the accident…Read more…
Investigators never recovered enough evidence to determine what happened after the final call. As a result, every explanation—accident, disorientation, mechanical trouble, misperception, deliberate disappearance, or an encounter with an unknown object—extends beyond what the radio exchange alone can demonstrate. [The Black Vault Documents]documents.theblackvault.comtober 21st,1978 over the Bass Strait. I believe that the accident…Read more…
The lasting value of the recording
Within Tasmania’s UFO history, the Valentich radio call remains important because it captures an unfolding event rather than a retrospective story. Readers can hear a pilot attempting to describe something in real time, with no opportunity to reshape the account after the fact. That gives the case a degree of immediacy rarely found in UFO reports. [ABC News]abc.net.auABC News Last Light: the Valentich MysteryABC NewsLast Light: the Valentich Mystery - ABC listen4 June 2019 — When twenty-year-old pilot Frederick Valentich vanished off the coast…
Yet the same recording illustrates the limits of eyewitness evidence. The exchange is strong evidence that Valentich experienced something he could not explain. It is not strong evidence for what that something actually was. More than four decades later, the radio call remains the most compelling part of the Bass Strait mystery precisely because it is both detailed and inconclusive. [Wikipedia+2Flight Safety Australia]WikipediaDisappearance of Frederick ValentichDisappearance of Frederick Valentich
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Further Reading
Books and field guides related to What did Valentich really report?. Use these as the next step if you want deeper reading beyond the article.
The UFO Experience
Provides a framework for evaluating eyewitness reports and unexplained aerial observations like the Valentich case.
In Plain Sight: an Investigation Into UFOs and Impossible Sci...
Explores how unusual aerial reports are assessed and debated, paralleling questions raised by Valentich's radio call.
UFOs
Focuses on pilot and official testimony, making it particularly relevant to a pilot-reported incident.
Passport to Magonia
Examines reports of strange aerial phenomena and how witness interpretations can shape extraordinary cases.
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Endnotes
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Source: Wikipedia
Title: Disappearance of Frederick Valentich
Link: https://en.wikipedia.org/wiki/Disappearance_of_Frederick_Valentich -
Source: skeptoid.com
Link: https://skeptoid.com/episodes/385Source snippet
The Disappearance of Frederick Valentich22 Oct 2013 — The Australian Department of Transport's official accident investigation summary re...
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Source: youtube.com
Title: Ep 126
Link: https://www.youtube.com/watch?v=Ej8oiPX03w0Source snippet
Wikipedia...
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Source: tahs.org.au
Link: https://tahs.org.au/wp-content/uploads/2020/07/TAHS-2020.0002.0_Mystery-VH-DSJ.pdfSource snippet
Tasmanian Aviation SocietyMysteries of Aviation – Frederick Valentich and VH-DSJTaken from the official Air Transport Accident Board repo...
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Source: abc.net.au
Title: ABC News Last Light: the Valentich Mystery
Link: https://www.abc.net.au/listen/programs/the-history-listen/valentich-mystery/10980258Source snippet
ABC NewsLast Light: the Valentich Mystery - ABC listen4 June 2019 — When twenty-year-old pilot Frederick Valentich vanished off the coast...
Published: June 2019
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Source: skepticalinquirer.org
Link: https://skepticalinquirer.org/2013/11/the-valentich-disappearance-another-ufo-cold-case-solved/Source snippet
V: My intentions are, ah, to go to King Island. Ah, Melbourne, that strange aircraft is hovering on top of me again.Read more...
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Source: documents.theblackvault.com
Link: https://documents.theblackvault.com/documents/ufos/australia/B1497_V116-783-1047_10491375.pdfSource snippet
tober 21st,1978 over the Bass Strait. I believe that the accident...Read more...
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Source: flightsafetyaustralia.com
Title: leaving this world
Link: https://www.flightsafetyaustralia.com/2025/02/leaving-this-world/Source snippet
24 Feb 2025 — Fred Valentich's disappearance remains a mystery but at the same time, there are lessons to be learnt from it.Read more...
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Source: flightsafetyaustralia.com
Title: driven to distraction
Link: https://www.flightsafetyaustralia.com/2017/01/driven-to-distraction/Source snippet
!18 Jan 2017 — CLEAROFF is an en-route informal check of: Engine (check gauges) Altitude (correct as assigned) Radio (check frequency)...
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Source: podcasts.apple.com
Link: https://podcasts.apple.com/ie/podcast/frederick-valentich-the-flight-australian-mystery/id1837358967?i=1000761416106Source snippet
Valentich - The Flight - Australian Mystery14 Apr 2026 — He crossed the coast at Cape Otway at seven o'clock, right on schedule...
Additional References
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Source: facebook.com
Link: https://www.facebook.com/groups/2513639668759108/posts/24460956840267409/Source snippet
Australian pilot disappearance over Bass StraitThe Final Radio Exchange Below is the word-for-word transcript (as preserved by the Austra...
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Source: x.com
Link: https://x.com/VisionaryVoid/status/2060724158250787246Source snippet
VisionaryVoidHe described it as a long, metallic object with a green light, moving at incredible speeds. Over the next several minutes, V...
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Source: monumentaustralia.org
Link: https://www.monumentaustralia.org/themes/people/aviation/display/30627-frederick-valentich -
Source: reddit.com
Link: https://www.reddit.com/r/lostmedia/comments/gj5oo3/looking_for_the_frederick_valentich_original_audio/ -
Source: medium.com
Link: https://medium.com/%40TheZionistWriters/this-pilots-last-words-are-an-enduring-true-crime-mystery-49b5019c4122 -
Source: medium.com
Link: https://medium.com/%40georgek2928/its-not-an-aircraft-the-vanishing-of-frederick-valentich-over-bass-strait-5ec44c3ae533Source snippet
“It's Not an Aircraft”: The Vanishing of Frederick Valentich...On Saturday 21 October 1978, Valentich rented a Cessna 182L, registration...
Published: October 1978
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Source: reddit.com
Link: https://www.reddit.com/r/mystery/comments/1nomej6/its_not_an_aircraft_the_baffling_final_flight_of/Source snippet
You left out the part where Nickell says the green light Valentich observed was his own wing marker.Read more...
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Source: vocal.media
Link: https://vocal.media/horror/the-frederick-valentich-disappearance-the-pilot-who-narrated-his-own-vanishingSource snippet
Steve Robey, a controller at Melbourne Air Traffic Control in Tullamarine, took the call. He transcribed every word in real time. Valenti...
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Source: aviation-safety.net
Link: https://aviation-safety.net/wikibase/wiki.php?id=166155Source snippet
le to determine the cause, but that it was "presumed fatal" for Valentich.Read more...
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Source: facebook.com
Link: https://www.facebook.com/themissingandunsolvedcrimesofsouthaus/posts/frederick-valentich-a-20-year-old-pilot-in-training-was-on-a-235km-training-flig/821670490418755/Source snippet
al-mile (232 km) training flight in a Cessna 182L light...
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