THINK ABOUTIT UFO SIGHTING REPORT

The 1978 Valentich Disappearance: Bass Strait’s Unsolved UFO Mystery

At 7:06 p.m. on October 21, 1978, 20-year-old pilot Frederick Valentich radioed Melbourne Flight Service about a long, metallic, green-lit object orbiting above his Cessna over Bass Strait. Six minutes later, after his engine began rough-idling and a final transmission — “that strange aircraft is hovering on top of me again. It is hovering and it’s not an aircraft” — 17 seconds of open, metallic-sounding microphone noise gave way to silence. Neither Valentich nor his plane was ever found. It remains one of the most significant unresolved mysteries in both aviation and UFO history.

Date: October 21, 1978

Sighting Time: Approximately 7:06 p.m., during a radio transmission beginning shortly after departure

Day/Night: Early evening (end of daylight at Cape Otway was 7:18 p.m. that day)

Location: Bass Strait, between Cape Otway, Victoria and King Island, Tasmania, Australia

Urban or Rural: Air — aerial sighting over open water, not applicable

No. of Entity(‘s): None documented

Entity Type: None documented

Entity Description: None documented

Hynek Classification: CE-II (Close Encounter II) — corrected from the source material’s original CE-VI. CE-VI requires a confirmed death associated with a UFO sighting, but Valentich’s death was never confirmed — no body or wreckage was ever recovered, and “presumed fatal” is an administrative classification for an unresolved disappearance, not established fact. CE-II is used here based on the reported rough-idling of the aircraft engine coincident with the object’s close approach, a possible physical/mechanical effect

Duration: Approximately 6 minutes, from Valentich’s first mention of the object to the final loss of radio contact

No. of Object(s): 1

Description of the Object(s): Described by Valentich as a long-shaped object, at times appearing to hover or orbit directly above his aircraft, with a green light and a shiny, metallic-looking exterior; moved at speeds Valentich could not identify and passed over his aircraft two or three times before the final, closer approach

Shape of Object(s): Described in the source summary as a saucer, though Valentich’s own transmitted description was of a “long shape,” not a disc

Size of Object(s): Described as large

Color of Object(s): Green light, with a shiny, metallic-appearing surface

Distance to Object(s): Not documented in absolute terms; described by Valentich as directly above and orbiting his own aircraft at close range

Height & Speed: 5,000 feet was the maximum cruising altitude nominated in Valentich’s flight plan, not necessarily his exact altitude during the encounter; the object’s speed was described by Valentich as unlike any aircraft he could identify

Number of Witnesses: 1 direct witness (Frederick Valentich, relayed live via radio to Flight Service Unit controller Steve Robey). At least 15 separate UFO sightings were independently reported across Victoria, New South Wales, Tasmania, and South Australia between midday and 9 p.m. the same day — these are separate sightings, not direct corroboration of Valentich’s specific encounter, though their timing and volume are considered notable in their own right

Special Features/Characteristics: Valentich’s Cessna 182 (registration VH-DSJ) vanished without trace despite an intensive four-day air, sea, and land search; his final transmission was followed by 17 seconds of open microphone carrying metallic-like sounds, possibly consistent with rapid microphone keying, before contact was lost entirely; a plumber on holiday, Roy Manifold, photographed an unexplained aerial and water-surface anomaly over Bass Strait only about 20 minutes before Valentich’s encounter began; the Cape Otway–Bass Strait–King Island area had a documented history of reported UFO activity both before and after this incident; official agencies engaged in an extended jurisdictional dispute over which body was responsible for investigating the UFO angle, and no such investigation was ultimately conducted by either the Department of Aviation or the RAAF

Case Status: Unexplained — the official Aircraft Accident Investigation Summary Report itself states the reason for the aircraft’s disappearance has never been determined; no trace of pilot or plane was found despite an extensive search, and no conventional explanation has been established for the radio-transcript encounter itself

Source: Bill Chalker, citing Aircraft Accident Investigation Summary Report No. V116/783/1047; interviews with FSU controller Steve Robey; research by Dr. Richard Haines

Summary/Description: Twenty-year-old pilot Frederick Valentich disappeared over Bass Strait on October 21, 1978, during a night flight from Moorabbin, Victoria to King Island, after radioing air traffic control about a large, green-lit, metallic-looking object orbiting above his aircraft. His final transmission was followed by unexplained sounds and then silence. Neither he nor his aircraft was ever found, and the case remains one of the most significant unresolved mysteries in Australian aviation and UFO history.

Related Cases: None documented on this site — occurred amid a documented cluster of independent UFO reports across multiple Australian states the same day, and within a broader, multi-year pattern of reported UFO activity in the Cape Otway/Bass Strait/King Island region

Detailed Report

Frederick Valentich

On the afternoon of October 21, 1978, 20-year-old pilot Frederick Valentich attended the Moorabbin briefing office, obtained a weather briefing, and at 5:23 p.m. filed a flight plan for a night visual-conditions flight from Moorabbin, Victoria to King Island and return, with a nominated cruising altitude below 5,000 feet. He mentioned picking up friends at King Island and carried four life jackets aboard, but made no arrangement for runway lighting at his destination. His Cessna 182, registration VH-DSJ, was refueled to capacity and departed Moorabbin at 6:19 p.m.

Shortly after departure, Valentich established two-way radio contact with Melbourne Flight Service Unit, speaking with controller Steve Robey. Approaching Cape Otway, Valentich reported a large aircraft passing below him and then over his own aircraft, describing it as approaching from the east and seeming to “play some sort of game,” passing over him two or three times at speeds he could not identify. He stated clearly it was not an aircraft, describing a long shape that at times appeared stationary, orbiting above him as he orbited below, with a green light and a shiny, metallic exterior. About a minute later, he reported the object approaching from the southwest. His engine then began idling roughly. His final transmission described the object hovering on top of him once more and explicitly stated it was not an aircraft. Seventeen seconds of open microphone followed, carrying metallic-sounding noise possibly consistent with rapid microphone keying, and then silence.

The Alert Phase of search-and-rescue procedures was declared at 7:12 p.m., escalating to a Distress Phase at 7:33 p.m. when the aircraft failed to arrive at King Island. An intensive air, sea, and land search continued for four days without finding any trace of the pilot or aircraft. Weather conditions in the area were clear, with light winds and excellent visibility, ruling out poor conditions as a contributing factor. The official Aircraft Accident Investigation Summary Report ultimately listed the location and time of the occurrence as unknown, the degree of injury as presumed fatal, and stated plainly that the reason for the aircraft’s disappearance had not been determined.

Robey, who spoke with Valentich throughout the encounter, later described him as increasingly concerned for his own safety as the conversation progressed, and said he did not believe he was speaking with a disoriented pilot, describing the communication as rushed and startled rather than confused. Beyond an early, unofficial suggestion that Valentich might have become disoriented and mistaken lighthouse lights for an aircraft while inverted, Australian aviation authorities never officially addressed what he might have observed. A jurisdictional dispute followed: the Department of Aviation maintained that responsibility for investigating any UFO dimension rested with the RAAF, while the RAAF stated it had never been formally asked to investigate, having understood the matter to fall under air accident investigation instead. Extensive searches of RAAF files turned up no documentation on the case at all.

Dr. Richard Haines, a NASA research scientist, aircraft accident investigator, and UFO researcher with a particular focus on pilot witness cases, later obtained access to the recording of the incident and conducted a detailed study, publishing his findings in a book on the case. He was unable to definitively identify the unusual sounds in the final 17 seconds of transmission, and outlined four hypothetical explanations: pilot disorientation leading to a fatal crash, a deliberate hoax by Valentich, an actual UFO-related in-flight event, and a military weapons test — while acknowledging the evidence for any single explanation, including his own apparent preference, remained slight and speculative.

Separately, a plumber on holiday at Crayfish Bay near Apollo Bay, Roy Manifold, had been photographing the sunset roughly 20 minutes before Valentich’s encounter began, using an automatic camera setup and noticing nothing unusual at the time. On developing the film, two of the six frames showed apparent anomalies: one showed what looked like a dense, dark mass rising from the water’s surface, and a later frame showed an unusual mass in the sky directly above that same position, resembling an object in flight with a possible trail. Film faults were ruled out, and while the RAAF suggested a breaking cumulus cloud as an explanation, the timing between exposures would have required that cloud to move at speeds up to 200 mph under otherwise calm conditions.

The broader region has a long-documented history of reported UFO activity. In the two months around January 1978, holidaymakers, fishermen, teachers, police, and lighthouse keepers around Cape Otway reported sightings, including an inexplicable light that hovered offshore for half an hour in July 1977. King Island experienced a cluster of nocturnal light sightings for at least three months before Valentich’s disappearance, including a close encounter near Whistler Point on April 10, 1976, in which a beam of light from a cross-shaped object approached a car directly before receding along the same path.

Steve Robey, interviewed again in 1999, maintained his view that Valentich had not been disoriented, faked the encounter, or taken his own life, describing him as having sounded genuinely under stress, and stated his own belief in a UFO connection. Valentich’s father, Guido, maintained an annual vigil hoping for resolution until his death some years later. The mystery has since entered broader Australian cultural memory, inspiring stage and television works, and a memorial plaque was placed near the Cape Otway light station by Valentich’s family and friends.

Researcher’s Notes

The Valentich Disappearance — 1978 and Why “Presumed Fatal” Isn’t “Confirmed Dead”

• The CE-VI classification presumed a fact that was never established. CE-VI specifically requires a confirmed death associated with a UFO sighting. The official report’s “presumed fatal” designation is a standard administrative classification applied when a missing aircraft and pilot are never recovered — it is not equivalent to a confirmed death, and treating it as such overstates what is actually known about Valentich’s fate.
• The described object’s shape doesn’t match the “saucer” label in the source summary. Valentich himself described a “long shape,” not a disc, and this page reflects that direct discrepancy between his own words and the source material’s shape field rather than silently reconciling them.
• The institutional buck-passing is a documented fact, not speculation about cover-up. The Department of Aviation stated UFO investigation was the RAAF’s responsibility; the RAAF stated it was never asked and considered the matter an air-accident issue. Whether this reflects genuine bureaucratic gap or something more deliberate, the practical result was that no agency ever formally investigated the UFO dimension of the case — a fact independently confirmed by a researcher’s direct access to RAAF files.
• The Manifold photographs deserve to be treated as a separate, additional anomaly, not folded into Valentich’s account. Taken by an unrelated witness roughly 20 minutes before Valentich’s radio transmissions began, they represent independent photographic evidence of something unusual in the same airspace and time window — and the specific, checkable problem with the “breaking cloud” explanation (requiring roughly 200 mph movement on a calm day) is worth stating plainly rather than accepting the RAAF’s suggestion at face value.
• Robey’s assessment carries particular weight because of his professional position. As the controller who spoke with Valentich live throughout the encounter, his direct, on-the-record judgment that Valentich was not disoriented, faking, or suicidal is a firsthand professional assessment, not a secondhand impression, and it has remained consistent across interviews given more than 20 years apart.

The Valentich disappearance endures not because any explanation has been proven, but because none has — official investigation was never properly conducted due to jurisdictional gaps between agencies, no wreckage was ever found despite an extensive search, and the recorded radio transcript remains as unsettling today as it was in 1978. It is preserved here as an open case, exactly as Australia’s own aviation authorities have always officially left it.

“That strange aircraft is hovering on top of me again. It is hovering and it’s not an aircraft.”

— Frederick Valentich, final radio transmission, October 21, 1978

A plaque commemorating Valentich was placed in the grounds of the Cape Otway light station near the Weather Station by his family and friends.