Mexican Air Force March 2004 — the FLIR-infrared multi-target video case

On March 5, 2004, the crew of a Mexican Air Force Merlin C26A maritime-patrol aircraft conducting a counter-narcotics surveillance mission over the state of Campeche in southeastern Mexico recorded approximately eleven unidentified objects on the aircraft's onboard FLIR infrared sensor during an extended period of flight. The Mexican Air Force March 2004 case is one of the most institutionally substantive contemporary national-military UAP cases in the international record. The Mexican Air Force formally acknowledged the case and released the FLIR footage publicly in May 2004 — a step that no other national air force had previously taken with comparable sensor-derived contemporary case material.

The encounter

The crew of the Merlin C26A — flying under the command of Major Magdaleno Castañón — detected multiple radar returns during the mission that the crew was unable to correlate with conventional traffic. The aircraft's FLIR infrared sensor was directed toward the returns, and the sensor recorded approximately eleven unidentified objects in the relevant airspace across an extended period. The objects were not visible to the crew through the aircraft's conventional optical sighting equipment, only on the infrared sensor — a feature of the case that became a focus of subsequent analytical attention.

The crew continued the mission while recording the sensor capture and reported the encounter on landing through standard Mexican Air Force institutional channels.

The institutional release

The Mexican Air Force's institutional handling of the case was substantively distinctive. Following internal review, the Air Force authorised the public release of the FLIR sensor footage in May 2004 — making the footage available to the Mexican press and, through the press, to international audiences. The Air Force's communication accompanying the release was characteristically careful: the Air Force confirmed that the footage was authentic and that conventional explanations had been investigated and could not be cleanly established, while noting that the institutional position did not advance any specific interpretive claim about the underlying phenomena.

The release was, at the time, the most substantive contemporary national-air-force public release of sensor-derived UAP material in any national record. It substantially preceded the contemporary US AARO-era pattern of structured public disclosure and is one of the institutional reference points in any subsequent discussion of how national air forces should engage with their own sensor-captured UAP material.

The subsequent analysis

Subsequent analytical work on the Mexican Air Force FLIR footage has examined several conventional-explanation candidates. The most-cited candidate is that the infrared signatures correspond to distant offshore petroleum platforms in the Bay of Campeche, whose heat signatures could plausibly have produced the observed FLIR returns under appropriate atmospheric conditions. This explanation accounts for some of the observed phenomenology but has been contested on the grounds that the apparent movement of the targets relative to the aircraft is not cleanly consistent with stationary distant heat sources.

The Mexican Air Force has not, on the public record, formally adopted or rejected the petroleum-platform explanation. The institutional position has remained that the case is unresolved and that the released sensor footage is presented for whatever analytical engagement it can support. For comparison with the parallel US Navy Roosevelt-era FLIR cases and the Chilean Navy 2014 helicopter video case, see the SkyLens UAP files page.

Editorial note: Independent SkyLens analysis of a publicly documented UAP case or institutional framework from Mexico. The case index linking the broader international UAP record is on the SkyLens UAP files page.