2009·First Air Brigade, Ilopango Airport, San Salvador

El Salvador.Ilopango · an airman photographs an object no one saw

In April 2009, a member of the Salvadoran Air Force who asked to remain anonymous photographed aircraft on the military ramp from the second floor of the First Air Brigade building at Ilopango Airport. He noticed nothing while shooting, but one frame showed, in broad daylight near the threshold of the old runway 08, a small, dark, elongated smudge against the cloudy sky. The Salvadoran aviation community circulated the image. It is a single 640-by-480-pixel frame by an anonymous photographer, with no original negative, no published analysis and no chain of custody.

Tier B · IndicativeWhat do they mean? →

Limited evidence: a single witness, testimony gathered years later, or an account without contemporary primary documentation.

What it was

73%natural or human cause

Most likely an ordinary cause that no one has identified

Natural or human causeNo known cause
See the split across the six explanations

Natural or human cause

Likely ordinary, unidentified70%
Classified human technology2%
Adversary technology1%

No known cause

Indeterminate23%
Non-human, controlled by no state3%
Non-human, hidden by a state1%
Why: No source proposes a cause for the 2009 photo: Flotilla Aérea describes an object that "did not correspond to any known aircraft or common atmospheric phenomena" without analysis, and the Soyuz 4 candidate cited by El Salvador.com belongs to the 1969 case.
Read the full reasoningThe bird-or-insect-near-the-lens reading is the entry's own. The absence of a published analysis is not evidence against a conventional cause: in its 2024 report AARO stated that "all 174 cases have been finalized as resolved to prosaic objects including balloons, birds, UAS, satellites, and aircraft", and adds that "many other cases remain unresolved": the figure is the rate among resolved cases, not among all.
(Flotilla Aérea, "Luces y enigmas en el cielo" (2024); El Salvador.com · AARO — Fiscal Year 2024 Consolidated Annual Report on UAP (14 Nov 2024), base rate ↗)

What happened

In April 2009, a member of the Salvadoran Air Force who asked to remain anonymous went up to the second floor of the First Air Brigade building at Ilopango Airport to photograph aircraft parked on the military ramp. He noticed nothing unusual while shooting. On reviewing the photographs, he found in one of them an unknown object very close to the threshold of the old runway 08. In the published image, 640 by 480 pixels, it is a small, dark, elongated smudge against the cloudy sky, above the hills, with helicopters and a DC-3 in the foreground. Flotilla Aérea, which gives the account in a December 2024 article, fifteen years later, says the object, captured in broad daylight, "seemed to move at high speed" and did not correspond to any known aircraft or common atmospheric phenomena; a single frame cannot measure speed. According to the same article, the image sparked curiosity and speculation among personnel.

The sources record other, earlier Salvadoran episodes, among them these two. On January 15, 1969, according to El Salvador.com, citing the front page of El Diario de Hoy the next day, a bright, fast, plate-shaped object that at times gave off black smoke flew over San Salvador around 3:30 in the afternoon, under a cloudy sky, "many thousands of meters up", and moved off toward Cerro de San Jacinto. Two carpenters working on the newspaper's terrace, Daniel Lauda Martínez and Manuel Martínez, alerted the journalists. Among the calls the newsroom received, someone suggested it might be the Soviet crewed mission Soyuz 4, launched on January 14 of that year.

On February 29, 1996, according to Flotilla Aérea's compilation, numerous people across the country reported lights crossing the sky at high speed, described as a series of flashes that seemed to move in formation, and a flood of calls reached the media and the meteorology office at Ilopango airport itself. Some experts attributed it at the time to the remains of the TSS-1R tethered satellite, which had broken away from the shuttle Columbia during the STS-75 mission with its tether of about 20 kilometers and which, according to Flotilla Aérea, was reentering the atmosphere that same night. Jonathan McDowell's catalog of space objects (GCAT) does not bear this out: it gives the TSS-1R's reentry as March 20, 1996, so on February 29 it was still in orbit.

No original negative or verified metadata has been published for the 2009 photograph: it is a single frame by an anonymous photographer, in which the supposed object was seen by no one while shooting and appeared only on reviewing the image. Flotilla Aérea says its investigation ruled out meteorological phenomena, bird migrations, meteorites, rocket launches and spacecraft transits, satellite movements and military exercises, but does not detail how this was done for this photo. The article adds that the cases it describes are only a fraction of the regional accounts of unidentified aerial phenomena.

Why it matters

The 2009 photograph is a single frame by an anonymous photographer, with no original negative, no published photogrammetric analysis and no chain of custody, circulated by Flotilla Aérea in 2024. Its central feature is that the object appears in the image although no one saw it while shooting. That the photographer was military does not by itself add data about the object: the negative, the metadata and an analysis that could estimate size and distance are missing.

No source proposes a cause for the smudge or has examined it. A small object near the lens (a bird, an insect, a speck) can appear in a photo as a blurred smudge that looks large and fast at middle distance, without the photographer noticing while looking at the distant aircraft. Without analysis of the original image, that possibility can be neither confirmed nor ruled out.

Documents and sources

Documented evidence

  1. April 2009 photograph taken from the second floor of the First Air Brigade (Ilopango) showing an unidentified object near the threshold of the old runway 08
  2. Photographer: a member of the Salvadoran Air Force, anonymous by his own choice
  3. The object was not perceived at the moment of capture (it appeared only on reviewing the image) and was captured in broad daylight
  4. January 15, 1969 antecedent: a bright plate-shaped object over San Salvador, El Diario de Hoy front page of January 16 (witnesses: carpenters Daniel Lauda Martínez and Manuel Martínez and newspaper staff)
  5. For the 1969 case, one of the callers to El Diario de Hoy suggested the Soviet Soyuz 4 mission (launched January 14, 1969)
  6. Flotilla Aérea (December 2024 article) gives the photo; there is no verified original negative, photogrammetric analysis or chain of custody

Sources

  1. Flotilla Aérea — 'Luces y enigmas en el cielo' — Compilation of the 2009 Ilopango case by the Salvadoran aviation community.
  2. El Salvador.com — 'Enero 1969: OVNI sobrevuela San Salvador y genera alarma entre capitalinos' — Historical precedent; reports that one of the callers to the newsroom suggested the Soyuz 4 mission.
  3. AARO — Fiscal Year 2024 Consolidated Annual Report on UAP (Nov 14, 2024)
  4. McDowell, J. — GCAT space-object catalog (TSS-1R, 1996-012B) — Gives TSS-1R's reentry as March 20, 1996, not the February 29 reported by Flotilla Aérea.

Context (not images of the event)

Contexto · el aeropuerto de Ilopango (El Salvador)

Context · Ilopango Airport (El Salvador)

Front of the Ilopango airport building, with the signs "Aeropuerto" and "Museo Nacional de Aviación". It is a context image of the place; it does not show the object.

32-0001 Aeropuerto de Ilopango.jpg · Wikimedia Commons · CC BY-SA 3.0 · open original