RB-47 radar–visual encounter
An Air Force RB-47 electronic-warfare jet was followed for more than an hour by a light that showed on its receivers, on ground radar and to the eye.
1957 CE · 32.30, -94.50 · status: unexplained
The account
On 17 July 1957 the six-man crew, training over the Gulf of Mexico and the south-central US, picked up a strong signal near 2,800 MHz, then saw a huge light and had ground radar confirm a target that kept pace with them across Mississippi, Louisiana and Texas into Oklahoma. The Condon Committee, which learned of the case from the pilot, could find no Blue Book record and listed the phenomenon as unidentified.
The sceptical view
Some have argued the light was an airliner; key records were never found, which limits any analysis.
The researched reading
A rare case with onboard electronic intercepts, ground radar and sightings agreeing over a long track. Known aircraft and radars may explain parts, but the missing records and conflicting reconstructions leave real room for an unexplained phenomenon.
| Explanation | Weight | Why |
|---|---|---|
| Something known, misidentified | 37% | Philip Klass argued the light was American Airlines Flight 966 and the 2,800 MHz signals came from ground radars; Brad Sparks accepted a meteor for the first visual, but disputed the airliner, so known objects explain parts but not all. |
| Genuinely anomalous | 30% | Electronic receivers, ground radar and crew sightings tracked the same object over 700 miles for more than an hour; the Condon Committee left the case unidentified. |
| Secret human technology | 11% | The RB-47 was itself an electronic-warfare trainer; a US emitter, test or exercise target that was never disclosed could account for the signals. |
| A known natural phenomenon | 10% | Ducting of ground radar signals over the Gulf region can produce consistent false bearings. |
| Perception, memory or mind | 6% | The crew’s memories were collected a decade later, and the original records were never found. |
| A poorly understood natural phenomenon | 5% | An unknown atmospheric emitter of microwaves is a remote option. |
| A hoax or fabrication | 1% | Six officers on a training mission had no motive. |
Official position: The Condon Committee listed it as unidentified; Project Blue Book had little or no file, and Klass proposed an airliner and ground radar.