The Federal Aviation Administration announced Friday that it is imposing a nationwide ground stop on all departing flights, "due to extraordinary circumstance and reasons for safety."

The FAA confirmed the order to Just The News but did not give further details on the "extraordinary circumstance." 

Transportation Secretary Sean Duffy also confirmed the order impacted all American airports and comes after a communication issue impacted all Air Route Traffic Control Centers.

"FAA technicians are investigating the issue," he said on X. "We will provide immediate updates as we have them."

An air traffic control advisory reads: "All departing traffic should remain ground stopped until further notice. Inbound international flights will be managed on a case-by-case basis," according to Axios.

Nationwide ground stops are incredibly rare, with the last being on January 2023, when a pilot notification system went down, according to CNN. Before that, it was the ground stop issued for the 9/11 terror attacks in 2001.

This story is developing. Please check back for updates.

Misty Severi is a news reporter for Just The News. You can follow her on X for more coverage.