The Federal Aviation Administration (FAA) announced on Wednesday that normal air traffic operations in the United States were resuming after an overnight computer outage that grounded thousands of flights.
The FAA explained that the system known as Notice to Air Missions (NOTAM), which contains crucial information for those involved in flight operations, had experienced a failure.
“The FAA is continuing a thorough review to determine the root cause of the Notice to Air Missions (NOTAM) system outage,” the FAA said in a statement. “Our preliminary work has traced the outage to a damaged database file. At this time, there is no evidence of a cyber attack. The FAA is working diligently to further pinpoint the causes of this issue and take all needed steps to prevent this kind of disruption from happening again.”
The White House has also stated that there was no indication that the outage was caused by a cyberattack.
Nevertheless, President Joe Biden has ordered the Department of Transportation to conduct a thorough investigation to determine the cause of the outage.
According to online flight tracker FlightAware, as of 10:17 a.m. ET, there were 5,417 delayed flights within, to, and out of the U.S. Additionally, 924 flights were cancelled.