Safety system breakdown across US air travel system

New York, The Gulf Observer: Thousands of flights across the U.S. were canceled or delayed Wednesday after a system that offers safety information to pilots failed, and the government launched an investigation into the breakdown, which grounded some planes for hours.

The Federal Aviation Administration said preliminary indications “traced the outage to a damaged database file.” The agency said it would take steps to avoid another similar disruption.

The breakdown showed how much American air travel depends on the computer system that generates alerts called NOTAMs — or Notice to Air Missions.

Before a plane takes off, pilots and airline dispatchers must review the notices, which include details about bad weather, runway closures or other temporary factors that could affect the flight. The system was once telephone-based but moved online years ago.

The system broke down late Tuesday and was not fixed until midmorning Wednesday. The FAA took the rare step of preventing any planes from taking off for a time, and the cascading chaos led to more than 1,300 flight cancellations and 9,000 delays by early evening on the East Coast, according to flight-tracking website FlightAware.

Transportation Secretary Pete Buttigieg told a news conference that the problems “led to a ground stop because of the way safety information was moving through the system.”

After the failures were fixed, he warned that travelers could continue to see some effects “rippling through the system.”

Buttigieg said his agency would now try to learn why the system went down.

Longtime aviation insiders could not recall an outage of such magnitude caused by a technology failure. Some compared it in scope to the nationwide shutdown of airspace after the 2001 terrorist attacks.

“Periodically there have been local issues here or there, but this is pretty significant historically,” said Tim Campbell, a former senior vice president of air operations at American Airlines and now a consultant in Minneapolis.

Campbell said there has long been concern about the FAA’s technology, and not just the NOTAM system.

President Joe Biden said that he was briefed by Buttigieg.

Buttigieg said the ground stop showed that “safety is going to be our North Star, as it always is.”

“We are now pivoting to focus on understanding the causes of the issue,” he said.

European flights into the U.S. appeared to be largely unaffected.

It was the latest headache for travelers in the U.S., who faced an even larger number of daily flight cancellations over the Christmas holiday due to a severe winter storm and a breakdown in crew-scheduling technology at Southwest Airlines.