BBC News reported that the United States transport secretary has said a copper wire upgrade caused a nationwide flight suspension. The outlet's headline attributes that explanation to the secretary, and the account is presented as part of a report on the disruption.

BBC News's summary of the same report says the United States government is still trying to find out whether the chaos was caused by "incompetence" or by faulty equipment. The summary therefore presents the cause as an open question that the government is working to answer.

The two accounts in the report differ on whether the cause has been settled. The headline states the transport secretary's view that the copper wire upgrade was responsible, while the summary describes an ongoing government effort to decide between two possibilities. Because the headline reports a claim by the secretary and the summary reports an unresolved inquiry, the report as described here does not establish a settled cause.

Neither the headline nor the summary provides further detail about the copper wire upgrade, the number of flights affected, or the locations involved. The report, as summarized, does not say when the suspension began or ended. BBC News's material available for this story names no dateline city, and no author is credited.

This story is drawn only from the headline and summary of the BBC News report. The full article was not available for this account, so statements beyond the headline and summary are not reflected here.

Sources: BBC News: Copper wire upgrade caused nationwide flight suspension, US transport secretary says.