The U.S. Federal Aviation Administration orders an unusual suspension of flights at airports across the U.S.

Reuters reported that the U.S. Federal Aviation Administration (FAA) ordered the suspension of aircraft operations across the United States on the afternoon of the 13th (local time), Friday.

The news agency reported that the FAA issued this guidance citing unusual circumstances and safety reasons.

Accordingly, aircraft scheduled to take off must wait on the ground, and international aircraft entering U.S. airports are handled on a case-by-case basis.

Axios, an American online media outlet, reported that it is extremely unusual for a flight suspension order to be issued across the United States.

Reuters reported that the FAA suspended aircraft operations in the Chicago area due to air traffic control communication issues before a nationwide flight suspension order was issued.