On 11 November 1979, a Spanish airliner with 109 passengers diverted to Manises after its crew reported red lights, and a fighter jet was scrambled. The Spanish Air Force later declassified its report. The object identity was never settled.

Manises matters because it is a commercial-flight diversion that triggered a military scramble — a rare documented aviation-military response to an unidentified object.
A TAE Super Caravelle with 109 passengers was flying toward the Spanish mainland when its crew, led by Captain Javier Sáenz de Tejada, reported red lights.
Documented
The flight and the crew’s report are documented.
The crew diverted to Manises and made an emergency landing. The diversion is documented.
Documented
The diversion and landing are documented.
A Spanish Air Force jet was scrambled in response. The Air Force later declassified a report (1994). The object identity and the relationship between the scramble and the sighting remain debated.
Debated
The object identity is disputed.
No photograph or radar is publicly established. The case rests on the crew’s account and the declassified report.
Unverified
Any extraordinary craft or extraterrestrial origin is unverified.
These sources do different jobs: the Spanish Air Force report is the official record and Wikipedia compiles the account. Neither establishes the object identity.
The declassified official record.
The compiled reference account.