FAA ground stop cause odds: Traders see 94% chance of system failure

On Friday evening, the Federal Aviation Administration announced it was lifting its ground stop restriction for all flights.

The nationwide ground stop was the third one in US history, coming nearly four years after the last incident when a key FAA computer system malfunctioned. The first occurred after the terrorist attacks on Sept. 11, 2001, the Associated Press reported.

While the announcement was “unprecedented,” Homeland Security Secretary Markwayne Mullin said the problem was not due to a nefarious act. “This isn’t another 9/11,” Mullin continued.

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The FAA said the flight restrictions were due to a temporary telecommunications outage. “Every flight has been accounted for and international flights will be handled on a case by case basis,” the FAA said on X.

Transportation Secretary Sean Duffy pointed to a communication issue affecting air route traffic control centers. “We started to have inconsistency in the data from the radars and our communication with airplanes,” Duffy said to reporters at the White House. “We have is an incredibly old air traffic control system.”

Last year, Congress approved $12.5 billion to modernize the technology air traffic controllers rely on and replace the FAA’s aging infrastructure.

Kalshi traders have given a 94% chance the FAA’s nationwide ground stop was due to a system failure and a 45% probability the announcement is the result of maintenance or upgrade, according to Kalshi’s event contract on what caused the FAA’s nationwide ground stop.

Former US Transportation Secretary Ray LaHood said in a phone interview with Bloomberg, “I believe it’s more a case of old, antiquated system that has failed rather than trying to transition from one system to a new one.”

“The problem appeared similar to a regional air traffic control communication outage in September that snarled hundreds of flights across the Northeast, aviation safety expert Steve Arroyo said, except this time on a nationwide scale,” the Associated Press said. “It may be linked to the outdated technology used by air traffic controllers.”

Meanwhile, the chances L3Harris Technologies caused the nationwide ground stop stand at 81%, per Kalshi’s prediction market odds. In July, the company received an FAA contract “to upgrade the country’s aircraft tracking network.” That upgrade includes improving over 700 ground stations, expanding surveillance capabilities, and replacing decades-old copper wire connections in major air route traffic control centers.

“L3Harris operates the largest terrestrial air traffic surveillance network in the world, integrating thousands of data sources and delivering information to hundreds of FAA and government facilities through a 24/7 network operations center,” per an L3Harris press release.

Kalshi markets now predict:

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