On the night of 11 November 1979, a Spanish commercial airliner carrying 109 people made an emergency landing at Valencia Airport after its crew reported being followed by unidentified red lights over the Mediterranean. A Spanish Air Force fighter was scrambled to intercept the object, and its pilot reported a visual contact he could not identify. The Spanish government later declassified a file on the incident. More than four decades on, the diversion itself is a matter of record, and the identity of the lights remains disputed — which is what makes the Manises incident Spain’s most famous UFO case.
Flight JK-297
The aircraft was a TAE Supercaravelle, Flight JK-297, operated by Transportes Aéreos Españoles. It had taken off from Salzburg, Austria, with 109 passengers on board, made a refuelling stop on the island of Mallorca, and was heading for Las Palmas in the Canary Islands. The captain was Francisco Javier Lerdo de Tejada.
At about 23:00 local time, while the aircraft was cruising over Ibiza at roughly 28,000 feet, Lerdo de Tejada and his crew noticed a set of red lights approaching fast from the port side. The lights appeared to be closing on the aircraft, and the crew could not identify them as another aircraft: there was no radio contact and no transponder signal, and the lights seemed to match the airliner’s course changes.
The captain’s concern was not, at first, that he was seeing something extraterrestrial. It was that another aircraft might be on a collision course. He requested permission for an emergency landing at the nearest suitable airport. Valencia’s Manises Airport, about thirty miles away, was designated as the destination. At about 23:45, the Caravelle touched down after a rapid descent that ground witnesses later described as unusually steep for a commercial jet.
The lights, according to the crew, stopped their approach just before the landing, but did not disappear entirely. Ground staff at Manises also reported seeing unidentified lights, and airport radar operators reported detecting three distinct non-transponding targets at that time. Some accounts give each target an estimated diameter of about 200 metres — a figure that should be treated with caution, since it rests on radar interpretation rather than on a measured object, and it is far larger than any aircraft of the era.
The Mirage is scrambled
After the airliner had landed safely, the Spanish Air Force scrambled a Dassault Mirage F1 interceptor from Los Llanos Air Base near Albacete, about 120 kilometres south-west of Manises. The aircraft took off at about 00:40 on 12 November, piloted by Captain Fernando Cámara.
Cámara later described a difficult pursuit. He reported making visual contact with what he perceived as a truncated cone shape displaying a bright, changing colour, and said he had to increase his speed to Mach 1.4 — faster than the speed of sound — just to keep it in sight. Despite his efforts, the object disappeared from view. The chase continued over parts of eastern and south-eastern Spain before being abandoned without a confirmed identification. Cámara later described apparent sudden acceleration by the object and interference with his onboard systems, although the details of those claims vary between accounts and are not confirmed by a single, complete sensor record.
The incident was reported in the Spanish press within days. El País covered the forced landing on 13 November 1979, and the story became national news.
The official file
The public impact of the incident was such that it reached the Cortes Generales, the Spanish Parliament, in September 1980, when a representative publicly asked for an official explanation. The Spanish Air Force prepared a case file, which was declassified in the mid-1990s — sources give the declassification as August 1994 for the report and 1996 for the full file — and later made available through the Spanish Defence Ministry’s virtual library as part of a wider declassification of UFO files that began in 1991.
The official report’s conclusion was sceptical. It suggested that the airliner pilot, the ground crew at Manises, and Captain Cámara might have been misled by flashes from a distant chemical industry complex, and by a series of optical illusions. That explanation has never been universally accepted: critics of it point to the multiple witnesses, the radar returns, and the fact that experienced pilots reported the lights behaving in ways that do not match a distant ground light. Supporters of the official view point out that there was no single, uninterrupted radar track conclusively matching the visual reports from both the passenger aircraft and the interceptor throughout the event, and that the observations from different locations may not all have been of the same thing.
Why the case stands out
Manises is often described as the first recorded case in which a commercial flight was forced to make an emergency landing because of a UFO, and as the most famous UFO sighting in Spain. Both descriptions are about the record, not about proof of an extraordinary craft. What makes the case genuinely unusual is the combination: a commercial diversion that is not in dispute, experienced aviation witnesses, ground radar, a military interception, and a large official file — all without producing an agreed explanation.
The captain himself consistently maintained that he diverted because he believed there was a genuine collision hazard, not because he believed he was encountering an extraterrestrial craft. That distinction matters. The case is strong evidence that something was seen and that it alarmed professional pilots; it is not evidence, on its own, of what that something was.
What is documented, and what is not
Documented facts: On 11 November 1979, TAE Flight JK-297, a Supercaravelle with 109 passengers aboard, flying from Salzburg to Las Palmas via Mallorca, diverted and made an emergency landing at Manises Airport in Valencia after its crew reported red lights approaching the aircraft; a Spanish Air Force Mirage F1 piloted by Captain Fernando Cámara was scrambled from Los Llanos and pursued an unidentified object without identifying it; the incident was reported in the press at the time and raised in the Spanish Parliament in September 1980; the Spanish Air Force file was declassified in the 1990s.
Unverified or disputed claims: The estimated 200-metre diameter of the radar targets is a reported interpretation, not a measured fact, and should not be quoted as the size of a craft. Details of Cámara’s pursuit — including the truncated-cone shape, the Mach 1.4 speed, and claims of electronic interference or a radar lock — vary between accounts and are not confirmed by a complete public sensor record. The official explanation involving flashes from a chemical plant and optical illusions is the Air Force’s conclusion, not a proven reconstruction, and it remains disputed. The spelling of the captain’s name also varies between sources, with some giving “Francisco Javier Lerdo de Tejada” and others “Javier Sáenz de Tejada”; this article uses the form given in the main Wikipedia account and in contemporary press coverage.