Air traffic resumes after computer failure at airports

As of 9 a.m. ET, airport operations are gradually resuming. The FAA continues to investigate the problem.

Air traffic is finally up and running after the failure of the Notification of Air Mission System (NOTAM) that caused numerous delays and more than 500 flights taking off from U.S. airports to be canceled, according to the Federal Aviation Administration (FAA).

The first airports to resume operations were Newark (New Jersey) and Hartsfield-Jackson (Atlanta). The cause has not been clarified and the investigation is still under way. In addition, the FAA communicated that pilots already in the air were safe to land, because they would have already checked the affected system before takeoff:

Transportation Secretary Pete Buttigieg confirmed that airport activity was up and running:

What is the NOTAM system?

The Notification of Air Missions System (NOTAM) is a computerized system that alerts aircraft pilots and other flight personnel about en-route hazards or changes in airport facility services or procedures, according to the International Civil Aviation Organization.