NOTAM, which stands for Notice to Air Missions, is a computer system that sends alerts to pilots about conditions that could affect the safety of their flights.
A United Airlines flight from Houston to New York was evacuated after an engine issue was reported before takeoff, according to the Federal Aviation Administration.
The tariffs, which will be implemented on Feb. 4, will be imposed via three separate executive orders that have been signed for each country, according to a White House official.