The UFO Library: Radar and visual
Oregon White Aircraft (October 2017)
On October 25, 2017, an unidentified white aircraft with no transponder was tracked on FAA radar at about 37,000 feet over Northern California and Oregon, seen visually by airline crews, and chased by F-15Cs from Portland; it was never identified, and the FAA recordings were released under FOIA in 2018.
The encounter
On the afternoon of October 25, 2017, Oakland Center, the FAA's en-route facility covering Northern California, picked up an unknown target at about 4:30 p.m. Pacific time. According to The War Zone, a controller described it as moving "very fast at 37,000" feet. It first ran southbound at high speed, then made an abrupt maneuver and "took off northbound." A Seattle Center manager said it was clearly not a small aircraft, that it outpaced a nearby Boeing 737, and that it might have been in "stealth mode or something." A Southwest pilot judged it was probably faster than his own jet.
After the target dropped off radar, airline crews began reporting a white aircraft flying north at roughly 35,000 to 40,000 feet. SkyWest 3478 saw it, and Southwest 4712 described a large white aircraft. United 612 was too far away to identify its type, and Alaska 525 never saw it. The exchanges between controllers and crews reportedly lasted about half an hour.
Military response
FAA controllers asked airline pilots to help track the object. The Western Air Defense Sector at McChord Air Force Base, part of NORAD, directed fighters from the 142nd Fighter Wing at Portland International Airport. Their F-15Cs, flying as "Rock" flight, were scrambled and reportedly ordered toward an air patrol north of Portland. By the time they looked, the aircraft could not be found. The War Zone quotes NORAD's limited statement that airline crews, air traffic control and 142nd F-15Cs were all involved.
The object never broadcast a transponder signal and never communicated with controllers. TCAS checks by nearby airliners came back negative, and radar lost it once it left the sector. The coverage notes that the FAA's own quality-assurance staff classed the event as "potentially significant," and that controllers said no procedure existed for an unknown aircraft at that altitude.
Disclosure and the audio
The incident was first confirmed publicly in November 2017, when the FAA, NORAD and the US Air Force acknowledged it. The fuller picture came in February 2018, when the FAA released controller and communications audio obtained through a Freedom of Information Act request. Fox News and The War Zone reported the recordings. Tyler Rogoway's coverage at The War Zone quotes controllers, including the line "definitely something out there" and an official saying "Wow that's weird." One official predicted that the event would be combed through "with a fine-tooth comb."
The reports also surfaced in regional coverage. ActiveNorCal retold the case for a local audience. Some online accounts describe it as a mystery aircraft or as evidence for non-human technology, but these rely on the same primary material.
Case for and against, and status
The strongest part of the case is institutional. Radar, controller statements, a federal records release and military confirmation all point to a real unidentified track. Several professional observers, including airline crews and experienced controllers, reported seeing something, and the FAA itself treated the event as significant.
The weaknesses are equally clear. The released recordings show confusion about altitude, position and direction, and the reports disagree on some details, including where the target first appeared and how far from the border it was. No physical evidence was recovered, and the aircraft was never identified. The public record does not rule out conventional explanations, such as a military or test aircraft, a radar artifact, or a misread of traffic, and the released material does not settle the question.
The sources reviewed for this entry report no identification of the object. The case is best filed as a well-documented, unexplained radar-visual event: the observations are officially acknowledged, but what they show remains open. It is a useful example of how the FAA and NORAD handle unknown tracks at airliner altitudes.
Witnesses
- Oakland Center controllers who first detected the target at about 4:30 p.m. Pacific time, and who described it as moving at high speed before a sharp turn northbound.
- Seattle Center manager, who said the object was not a small aircraft and outpaced a 737.
- Airline crews: United 612 (too far to identify the type), SkyWest 3478 (saw it), Southwest 4712 (described a large white aircraft, probably faster than his jet). Alaska 525 did not see it.
- 142nd Fighter Wing F-15C pilots, who were scrambled from Portland and did not locate the object.
Evidence
No physical evidence. The main documentary record is:
- FAA radar data and controller audio, released under FOIA in February 2018.
- A November 2017 acknowledgment by the FAA, NORAD and the US Air Force that the incident took place.
- Negative TCAS checks from nearby aircraft, and the absence of a transponder signal.
The FAA's quality-assurance classification of the event as "potentially significant" is a procedural judgment, not an identification.
Filed under
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Where this entry came from
ProvenanceAgent indexedUpdated 6d ago4 sources
Drafted by the archive's AI research agent from the sources below; corrections from readers are reviewed and folded in.
- First indexed
- 05 NOV 26 // 17:18Z
- Last updated
- 05 NOV 26 // 17:18Z
- FAA Recordings Deepen Mystery Surrounding UFO Over Oregon That Sent F-15s Scrambling, Tyler Rogoway, The War Zone
- Airliners And F-15s Involved In Bizarre Encounter With Mystery Aircraft Over Oregon, Tyler Rogoway, The War Zone
- UFO 'evidence': Recordings reveal air traffic control's confusion at strange craft over Oregon, Fox News, Fox News
- The Mysterious Case of the UFO that Flew Over Northern California, ActiveNorCal, ActiveNorCal
Notes
- FAA Recordings Deepen Mystery Surrounding UFO Over Oregon That Sent F-15s Scrambling, Tyler Rogoway, The War Zone
- Airliners And F-15s Involved In Bizarre Encounter With Mystery Aircraft Over Oregon, Tyler Rogoway, The War Zone
- UFO 'evidence': Recordings reveal air traffic control's confusion at strange craft over Oregon, Fox News, Fox News
- The Mysterious Case of the UFO that Flew Over Northern California, ActiveNorCal, ActiveNorCal



