On the night of November 11, 1979, one of the most famous UFO cases in Spanish aviation history unfolded over the western Mediterranean. The incident centered on TAE Flight JK-297, a Super Caravelle charter carrying 109 passengers from Salzburg to the Canary Islands, with a stop in Palma de Mallorca. After departing Palma, the crew reported seeing unusual red lights near the aircraft while flying in the direction of Ibiza. According to contemporary reporting in El País, the lights appeared to approach the plane in a way that made the captain believe there was a possible collision risk, prompting him to divert and land at Manises Airport near Valencia. Spain’s Ministry of Defense later included the case in its declassified UFO files, helping cement Manises as one of the country’s best-known air-safety-related UFO incidents. 

What made the Manises case so compelling was that it was not presented as a casual sighting but as an operational aviation event. The flight crew reportedly tried to clarify whether there was any known traffic in the area, but air traffic services and military radar did not provide an immediate ordinary explanation. As the lights continued to concern the crew, Captain Francisco Javier Lerdo de Tejada chose the nearest safe option and brought the aircraft down at Manises around 11 p.m. Local airport personnel then observed unusual lights of their own above or near the airport environment, which added to the sense that something out of the ordinary was taking place. Early coverage described a sustained pursuit over dozens of miles, turning the story into a national sensation almost immediately. 

The event did not end with the airliner’s landing. Because of the reports from the crew and ground observers, the Spanish Air Force scrambled a Mirage F1 from Los Llanos Air Base to investigate. The fighter pilot, Fernando Cámara, later became a central figure in the case. Accounts published in later summaries and research on the incident say he pursued unusual luminous targets for an extended period but could not successfully identify or intercept them. This military response elevated the Manises incident beyond an ordinary civilian report: it became a case involving a commercial airliner, airport personnel, and an armed interceptor, all within a short span of time. That combination is a major reason the case still occupies such an important place in Spanish UFO history. 

Over time, the case developed two competing legacies: one as a classic unresolved UFO encounter, and the other as a cautionary example of how unusual environmental and operational factors can combine into a dramatic misidentification. A later investigation associated with Spain’s Anomaly Foundation argued that the original red lights seen by the airliner were most likely distant flare emissions from the Escombreras refinery near Cartagena, made unusually visible and distorted by atmospheric conditions, especially a strong temperature inversion. That same skeptical reconstruction also suggested that other lights seen from the ground were stars or planets noticed under heightened tension, while the Mirage pilot’s onboard interference may have been related to electronic warfare activity from the U.S. Sixth Fleet in the region. 

Even so, the skeptical explanation did not erase the case’s mystique. The drama of a passenger aircraft diverting because of unknown lights, the involvement of multiple witnesses, and the subsequent fighter scramble kept the story alive in Spain’s press, UFO literature, and public imagination for decades. El País later referred to it as one of the most famous ufology cases in Spain, and the fact that it appeared in declassified defense files only deepened long-term interest. For believers, Manises remains a landmark example of a UFO interfering with civil aviation. For skeptics, it is one of the strongest demonstrations of how perception, stress, atmospheric optics, and military context can produce an extraordinary event without requiring an extraordinary object. Either way, the Manises incident endures because it sits at the intersection of aviation safety, military response, and enduring mystery.