US aviation authority resumes departures after communications outage

The US Federal Aviation Administration has resumed departures at all airports across the United States, lifting an earlier ground stop on outgoing flights that was imposed due to a communications system failure.

US Transportation Secretary Sean Duffy said that airspace had been reopened to air traffic, attributing the disruptions that affected travel to "outdated equipment."

Homeland Security Secretary Markwayne Mullin confirmed there were no indications that airport communications systems had been targeted by a cyberattack, adding that investigations into the cause of the outage are ongoing.