Expediente Número 791216: Avistamiento de Fenómenos Extraños (Vuelo Barcelona-Zaragoza)

This document is an intelligence report regarding an Unidentified Aerial Phenomenon (UAP) sighting on December 16, 1979, involving a private Cessna 310Q aircraft flying from Barcelona to Zaragoza. The crew, consisting of two pilots, reported observing a bright white light at approximately 18:00Z while at cruising altitude. The light, initially positioned between 10 and 11 o'clock relative to the aircraft, appeared to be at a slightly higher altitude. The pilots noted that the light's intensity fluctuated, at times shrinking to the size of a pinhead before returning to its original brightness. During the encounter, the crew experienced significant communication difficulties with Barcelona Control, noting that only the first four words of their transmissions were intelligible. As the aircraft approached Lérida, the light began moving erratically in lateral and vertical directions. The crew observed the light descend and eventually disappear, seemingly landing on the ground. Upon contacting Zaragoza Control, the light reappeared in the same relative position. The pilots requested and received permission to approach the object, but despite maneuvering toward it, they were unable to close the distance or detect it on their onboard radar. The sighting concluded as the aircraft prepared for landing in Zaragoza at 19:04Z. The report includes a post-flight account from the pilots and mentions a similar sighting reported by a T.A.E. flight on the same night. The document was originally classified as confidential but was declassified by the Spanish Air Force Intelligence Section in January 1995, with the conclusion that there was no reason to maintain its classified status.