Case file · Sighting

Manises 'UFO landing'

A commercial flight diverted to Manises airport, Spain after lights paced the aircraft.

1979 CE · 39.49, -0.46 · status: unexplained

The researched reading

A diverted airliner and a jet chase made headlines, but the declassified file and later analysis point to distant refinery flares and stars seen under unusual visibility. A small residue stays because the witnesses never accepted it.

Explanation	Weight	Why
Something known, misidentified	40%	Juan Antonio Fernández Peris’s analysis of the declassified file traced the airliner’s red lights to gas flares at the Escombreras refinery near Cartagena, about 160 km away, and the Mirage pilot’s chase to bright stars.
Undetermined	22%	The share a generic explanation had beyond what has been shown for this case: it fits many cases like this one, but has not been demonstrated for this one.
Genuinely anomalous	14%	The crew and some controllers rejected the flare explanation, and radar returns were not all reconciled.
A known natural phenomenon	12%	Exceptional visibility and a thermal inversion that night could lift distant ground lights into apparent sky positions and bend radar beams.
Perception, memory or mind	5%	A tense crew diverting at night is prone to reading lights as pacing the aircraft.
Secret human technology	4%	NATO or US aircraft were sometimes suggested, without evidence.
A poorly understood natural phenomenon	3%	No measured data suggest an unknown natural light.
A hoax or fabrication	0%	Air traffic records and the official file exclude staging.

Official position: The Spanish Air Force file, declassified in the 1990s, concluded the lights were most likely conventional, pointing to refinery flares and stars.

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