Federal Aviation Administration issued a ground stop

The Federal Aviation Administration issued a ground stop for all planes due to take off in the US, delaying and cancelling thousands of flights. The US Federal ⁠Aviation Administration said in a statement that the nationwide halt to departures and delays to landings at all US airports that began at about 4pm ET on Friday was caused by “a temporary telecommunications outage”.

“Every flight has been accounted for and international flights will be handled on a case by case basis,” the FAA added.

Here is what we know about the rare nationwide ground stop issued by the FAA.