O'Hare 2006: a dozen airline staff, and no photograph
United Airlines employees reported a disc hovering over a gate at the world's busiest airport in daylight. The FAA tapes are real. So is the absence of a single image.

The sighting was reported by United Airlines staff working gates in Concourse C.
On the afternoon of 7 November 2006, United Airlines staff working at Chicago O'Hare reported a grey metallic disc hovering below the overcast above Concourse C.
Accounts described it as stationary for several minutes before accelerating vertically through the cloud deck, reportedly leaving a clear circular gap behind it.
The witnesses were ramp workers, a pilot and supervisory staff — people whose job is looking at the sky above an airfield.

What is documented
Initially, the airline and the Federal Aviation Administration said nothing had been reported.
The Chicago Tribune then obtained FAA material under the Freedom of Information Act, including a recording of a United supervisor contacting the tower about the object. That established the reports had been made and passed on at the time, before any of it was public.
The FAA subsequently attributed the sighting to a weather phenomenon and did not investigate further.
The hole-punch cloud
The proposed explanation is a fallstreak hole: a gap that forms in a supercooled cloud layer when ice crystals nucleate and the surrounding droplets freeze and fall out. They are real, they are photographed regularly, and they leave a circular hole.
They are also frequently triggered by aircraft passing through the layer, which fits an airport.
What the explanation handles well is the hole. What it handles less well is the several minutes of a stationary metallic object reported before the hole appeared — a fallstreak hole does not hover first.
What the FOIA material contained
The documents obtained by the Chicago Tribune are the load-bearing part of this case and are worth being specific about.
They included recorded communications in which a United supervisor asked the tower whether anyone had seen an object over Concourse C, and internal FAA correspondence about the reports.
That establishes a chain: staff reported it at the time, a supervisor escalated it, and the FAA recorded the exchange — all before the story was public, and all in the face of initial statements that no report had been made.
Why staff were reluctant
Reporting an unexplained object carries a professional cost in aviation. Pilots and controllers operate under medical certification and can face scrutiny of their fitness to hold it. Several O’Hare witnesses spoke only on condition of anonymity. That disincentive is structural, it applies across the industry, and it is a reason absence of reports is weak evidence of absence of sightings.
The photograph problem
This is the case's central weakness and it should be stated first, not last.
O'Hare handles enormous passenger numbers. In 2006 the camera phone was already ubiquitous. An object visible for minutes over a concourse in daylight should have produced images from staff and passengers alike.
None credibly emerged. Photographs circulated afterwards have not been substantiated.
Join the discussion
Still open on this one:
- 01
Was any formal FAA inquiry opened?
The FAA position was that no investigation was warranted. Whether any internal assessment was made beyond that has not been established through the released material.
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See also
Everything this piece touches
Sources
Open them and check for yourself. Where a record is public, it is linked.
US National Archives
All-domain Anomaly Resolution Office
US Department of Defense
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