La Joya UFO incident

Case dossier

The earliest public document is not a Peruvian incident report. On 2 June 1980 the U.S. Defense Attaché Office in Lima sent Intelligence Report 6 876 0146 80, received by the Joint Chiefs message center on 3 June. Its heading warns that the information was not finally evaluated. The named source category was a Peruvian Air Force officer who had observed the event and could hear discussions about it; however, the passage about a pilot firing at close range is explicitly attributed to a third party. The message therefore confirms that the story circulated through military channels, not that U.S. investigators witnessed or technically verified the engagement.

That message describes two occasions near Mariano Melgar Air Base at La Joya: a morning event on 9 May and a lighted object on the evening of 10 May. On the first, officers in formation reportedly saw a round object hovering; an Su-22 was scrambled, fired at close range without apparent damage and was then outrun. On the second, another Su-22 allegedly failed to catch a lighted vehicle. The reporting officer added only that other sources had discussed the sightings, that 'some vehicle' apparently had been seen and that its origin remained unknown. The message gives no time, aircraft serial, pilot name, ammunition count, radar return, altitude, range, photograph or instrument attachment.

Santa María's later first-person account is much more detailed and follows a different calendar. In interviews published from 2008 through 2023 he said the event occurred at 07:15 on 11 April, while about 1,800 people were beginning work. He said the object looked like a balloon roughly five kilometres away and about 600 metres above the end of the runway. He identified himself as the alert pilot, said he was ordered to destroy a possible spy device, and recalled firing 64 explosive 30 mm rounds from two cannon. These figures are testimony: no public contemporaneous log independently fixes them.

He described a 22- to 28-minute pursuit in which the object climbed whenever he prepared another attack. In the 2023 El Comercio interview he said he climbed above 19,000 metres, broke off when the low-fuel warning appeared and passed within about 100 metres. He described an opaque whitish dome over a broad metallic circular base, with no visible windows, rivets or propulsion. Distance, size, speed and altitude in a featureless sky are difficult visual estimates, especially from a fast moving aircraft. The claim that shells hit or were 'absorbed' is not established: in the 2008 transcript Santa María specifically said he could not resolve that, only that he aimed directly and saw no explosion or damage.

A balloon explanation has a real evidentiary lead but no completed identification. StratoCat lists double-probe electric-field balloons launched from Cachoeira Paulista, Brazil, on 3 and 9 April 1980; the latter flight is recorded as eleven hours. A later technical reconstruction argues that high-altitude easterly-to-westerly winds and visual parallax could make a distant balloon appear low, evade fire and climb as the aircraft changed position. Yet the catalog does not track the 9 April balloon to Peru, and its recorded instrument flight ended long before 11 April. The reconstruction proposes that the envelope may have continued after payload separation, but no recovery record or trajectory closes that chain. It is a testable conventional hypothesis, not a solved identification.