The Hangzhou Airport Closure

Hangzhou Xiaoshan is the main airport serving a city of several million people in eastern China. On the evening of 7 July 2010, according to the account the archive holds, an unidentified glowing object was seen in the sky above it. The first reports came in just after eight, from air traffic controllers and from civilians on the ground. At 8.45pm the airspace was closed. It reopened at 9.41pm.

What is on the record

The archive resolves three classes of claimant on this case: an air traffic controller, flight crew, and passengers who had already landed. That puts observers inside the control tower, inside aircraft, and on the ground, and the sighting is attested from all three positions rather than from a single vantage point.

The operational consequences are the most concrete part of this file. Six flights were grounded and twelve inbound flights were diverted, and the account records that close to a thousand passengers were affected. An airport does not close its airspace for an hour without a reason entering an operations log, and that is the kind of trace which would ordinarily lift a case above testimony. The archive does not hold that paperwork. It holds the reporting of the closure.

Two things from outside the archive's holdings belong here. The dramatic photographs that spread worldwide under this case's name were examined at the time and found not to show it; one was identified as a rocket launch elsewhere in China and the rest as manipulated. And the account's note that the object was under investigation had an outcome the telling does not carry: the Chinese astronomical and civilian UFO bodies that looked into it concluded the object was an aircraft, and it was not seen on radar. The closure is documented. The mystery is thinner than the images suggested.

Why it sits where it does

This case grades L3 on the count of independent claimants, which measures sourcing rather than what the object was. The closure is real and well attested. What was over Hangzhou is, on the record available, most probably an aircraft, and not resolved here.