NEW YORK — The Federal Aviation Administration (FAA) says it is lifting its order to stop all domestic flight departures across the United State because( flight outage in US) . But before that, they were forced to stop flying due to a major disruption in their technology. The organization that provides pre-flight safety notifications to pilots has reactivated their system. The US flight outage caused widespread disruption. Thousands of flights were grounded across the country.

NOTAM – or Notice of Air Mission – is a ground stop order issued by the organization due to a system failure. The FAA lifted the order just before 9 a.m. ET, but the agency said normal air traffic was resuming across the country shortly. The FAA did not specify in their notice what caused the problem.

Airlines may implement ground delay programs, potentially exacerbating problems, due to flight delays or cancellations due to congestion created by mechanical disturbances in these aircraft systems.

The FAA’s website currently shows a ground stop at New York’s LaGuardia Airport as of 10:05 a.m. A location at Charlotte Douglas International Airport in North Carolina, also showing flight delays.
One of the largest hubs for American Airlines.
The Chicago Department of Aviation said ground stops at O’Hare and Midway have been lifted. They say there is a possibility of “remaining delays or cancellations”.

Airlines for America, the organization that represents US airlines, said earlier that the outage was causing “significant operational delays. Flight ground conditions” at all major US carriers, including United Airlines, Delta and American Airlines.
All said they grounded the flight due to the severity of the situation.

In response, United Airlines issued a travel waiver to North America in response to the outage.
As of 10:15am ET today FlightAware, which tracks delays and cancellations, shows more than 5,400 flight delays from the US
More than 900 flights have been canceled so far.
Southwest, which canceled thousands of flights after Christmas after reports of system glitches, had far more cancellations and delays than other airlines. About 8% of Southwest flights were canceled and 42% were delayed.

The cause of the outage is still unclear
Damage system NOTAM Notice to Air Mission, they send warning messages to pilots when conditions arise that could affect the safety of their flight. This system is different from air traffic control system.
By keeping aircraft at a safe distance from each other, NOTAM is another important tool for air safety.
US President Joe Biden said there was no immediate indication of the cause of the outage — the second US airline crisis in as many weeks. He said he is aware of the situation and is in contact with Transportation Secretary Pete Buttigieg.
“I just talked to Buttigieg,” he told reporters at the White House today. “They don’t know the reason. But I have been on the phone with him for the last 10 minutes. I told them to report me directly if they find out. The plane can still land safely, just not take off now.”
“They don’t know what’s causing it. They hope to have a good idea in a few hours and respond at that time,” Biden said.
Asked if it was a cyber attack, Biden said: “They don’t know. They’ll find out.”
“After discussions with the DOT/FAA there is no evidence of foul play,” a senior US official familiar with the matter told CNN.
White House press secretary Karin Jean-Pierre said in a statement that there is “no evidence of a cyber attack at this time” but the Biden administration has ordered an investigation by the Transportation Department.