The Federal Aviation Administration (FAA) has lifted the nationwide ground stop that halted departures across the United States after a communications failure disrupted air traffic control operations on Friday.
asserted
failure → lift → Friday
However, passengers may still face delays and cancellations as airlines work to bring their aircraft and crew back into position.
uncertain
airlines → face → position
US transportation secretary Sean Duffy said the problem had been identified and that air traffic control centres and Terminal Radar Approach Control (TRACON) facilities were operational again.
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centres → say → ?
The FAA reopened US airspace at 8.15 pm Eastern Time, allowing flights to resume.
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flights → reopen → pm
But Duffy cautioned that lifting the ground stop did not mean all flights would immediately take off.
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flights → caution → stop
The recovery would depend on whether airlines had pilots and flight attendants available to operate their scheduled services.
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pilots → depend → services
"Does that mean every flight is going to fly right now?
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flight → mean → ?
It's going to be slow," Duffy said, advising passengers at airports to check directly with their airlines.
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Duffy → go → airlines
"We're going to try to move as many of those as we can tonight if we have the capacity with crews to move those flights.
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we → go → flights
If not, we're going to start tomorrow morning with our airline partners, moving those aircraft.
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we → go → aircraft
But it's going to take us some time to unwind what's happened this afternoon," he added.
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he → go → time
What caused the nationwide ground stop?
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What → cause → stop
Explaining the sequence of events, Duffy said instability in radar and communications systems was detected at 3.36 pm Eastern Time across air traffic control centres and TRACON facilities nationwide.
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instability → explain → centres
The disruption led to inconsistencies in radar data and communications between controllers and aircraft.
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disruption → lead → controllers
The FAA subsequently ordered a ground stop, following established safety procedures.
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FAA → order → procedures
Duffy said more than 3,500 aircraft were in the air when the order was issued.
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order → say → air
Most were able to land safely, and fewer than 400 remained in the airspace at the time of his latest update.
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400 → land → update
He said the FAA had not lost all radar or TRACON capabilities, but the instability prompted officials to halt departures as a precaution.
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instability → say → precaution
Certain essential operations, including medical evacuation flights, cargo services carrying critical medicines and law enforcement movements, were allowed to continue.
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operations → include → medicines
Duffy attributed the failure to ageing air traffic control infrastructure, describing the system as "incredibly old" and saying that outdated hardware had gone down.
The secretary also warned that similar disruptions could happen again unless the system was modernised.
uncertain
system → attribute → system
"You will have more of them unless the American people and the Congress tell us to build," he said, while acknowledging that he could not predict every possible failure.
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he → have → failure
He referred to previous incidents in New York and Newark involving similar problems and urged lawmakers to approve funding for a complete overhaul.
Trump administration seeks $50 billion for air traffic control upgrades
The Trump administration increased its request for air traffic control funding to $50 billion late Friday, after the communications failure forced the nationwide ground stop, Reuters reported.
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Reuters → refer → stop
Earlier in the day, Duffy and the White House had sought $30.1 billion to upgrade the country's ageing airports and air traffic control infrastructure.
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Duffy → seek → airports
"This is an emergency," Duffy said.
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Duffy → say → ?
"What's more important than having an air traffic control system that actually works?"
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that → have → system
The $30.1 billion proposal included $10.1 billion for air traffic control modernisation, including a common automation platform, controller workstations and cloud computing.
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proposal → include → platform
It also sought $2 billion to replace and improve FAA control towers and $18 billion for airport-related projects, including the modernisation or replacement of ageing terminals.
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It → seek → terminals
The administration's request also comes after Congress approved $12.5 billion in July 2025 for air traffic control upgrades and increased recruitment of controllers.
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Congress → come → controllers
The FAA has said it has replaced 68% of its legacy copper telecommunications network with high-speed fibre infrastructure.
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it → say → infrastructure
Reuters reported that the Senate Commerce Committee said Friday's incident underlined the need to prioritise modernising the en route centres that manage traffic between airports.
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that → report → airports
Congress has already approved $1.9 billion to replace outdated en route centres.
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Congress → approve → centres
The FAA's dependence on ageing technology has been a longstanding concern.
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dependence → age → technology
The agency relies on decades-old computers and has sourced replacement parts through auction websites.
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agency → rely → websites
Last week, it said it would replace floppy disks used for weather and other critical information at more than 400 air traffic control facilities by the end of 2028.
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it → say → 2028
Airlines warn of continuing delays and cancellations
Even after the FAA lifted the ground stop, airlines faced the task of repositioning aircraft and arranging available crews before they could resume normal schedules.
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they → warn → schedules
Air Canada cancelled all flights to and from the US for the remainder of Friday evening because of the FAA order.
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Canada → cancel → order
The airline also warned that services between Canada, the Caribbean and South America that pass through US airspace could be affected.
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that → warn → airspace
JetBlue cancelled the remainder of its domestic flights on Friday, with exceptions for certain Europe-bound services from Boston Logan International Airport and New York's John F Kennedy International Airport.
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JetBlue → cancel → Airport
The airline warned that disruptions, including further cancellations, could continue into Saturday, according to AP.
uncertain
disruptions → warn → AP
The ground stop had affected thousands of flights.
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stop → affect → flights
…and 4 more, not listed.
The Aporia
