science

Traffic stops at 9:36 p.m. French time, resumes at 2:15 a.m.

The United States closed its airspace on Friday after a communications failure, with nearly 6,000 flights canceled and many passengers left stranded.

septembre, unis, près, san francisco, téléphones, centaines, passagers, milliers

Key facts

  • Traffic stops at 9:36 p.m. French time and does not resume until 2:15 a.m. Between those two times, the airspace remains closed following a decision…
  • At San Francisco Airport, chaos sets in on Friday afternoon. Travelers there face the halt in flights and, as in the other terminals, try to…
  • On Friday afternoon, the United States closes its airspace for several hours because of a major communications failure. Flights are suspended for the…

Traffic stops at 9:36 p.m. French time and does not resume until 2:15 a.m. Between those two times, the airspace remains closed following a decision linked to the communications problem.

At San Francisco Airport, chaos sets in on Friday afternoon. Travelers there face the halt in flights and, as in the other terminals, try to understand when they will be able to depart again.

On Friday afternoon, the United States closes its airspace for several hours because of a major communications failure. Flights are suspended for the duration of the outage.

Nearly 6,000 trips are canceled and hundreds of thousands of passengers are affected. The suspension of U.S. air traffic thus disrupts a large share of the journeys scheduled for that day.

At airports, hundreds of thousands of passengers find themselves stranded. They seek information from airline employees while departures remain suspended.

The closure stems from a communications problem described as a major failure. This malfunction prevents traffic from continuing under normal conditions for several hours.

After 2:15 a.m., a return to normal operations remains, according to the authorities, a matter of time. Nearly 6,000 canceled trips and hundreds of thousands of passengers still affected show the scale of Friday’s failure.

Dig deeper

What is San Francisco Airport?

It is one of the major hubs on the West Coast of the United States, a gateway to Asia and the Pacific, which is why the chaos was visible as soon as flights stopped.

What does United States airspace cover?

It is the controlled volume above the country where commercial takeoffs, landings and overflights are authorized only if links with air traffic control are working.

Why does a communications failure suspend traffic?

Pilots and controllers must be able to exchange instructions and positions in real time; without that link, safety requires keeping aircraft on the ground.

Why does this closure weigh so heavily?

The United States account for a major share of global traffic: nearly 6,000 canceled trips and hundreds of thousands of stranded passengers show the knock-on effect on connections.

What happens after 2:15?

Reopening does not immediately restore a normal schedule: cancellations already decided and passengers still in the terminals remain to be dealt with.

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