Technology

Air Traffic Control Software Glitch Causes Chaos

15 Sep to 22 Sep
7 outlets

Each outlet's article on this story, most articles first

24 articles
17 reporters
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15 Sep: 1 articles18 Sep: 10 articles21 Sep: 11 articles22 Sep: 2 articles15 Sep22 Sep
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Air Traffic Control Software Glitch Causes Chaos. (2026, October 14). The Aporia. https://the-aporia.com/event/10546

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Photo via Evening StandardPhoto via Daily MailPhoto via BBC

The failure led to more than 2,000 flights being cancelled and hundreds of thousands of passengers affected, with some sleeping on airport floors or getting stuck overseas.

What happened

The outlets' own sentences, most widely reported first. Hover or tap one to see who reported it.

NATS, formerly known as National Air Traffic Services, said on Friday that the glitch on September 8 was behind the mayhem at British airports and beyond, rather than any human failings – as many had speculated at the time.

4 of 7 outletsfirst reported 18 Sepwording from South China Morning Post

“It is crucial that our national infrastructure is fit for the future, and this government will make sure the aviation sector is as resilient as possible, so passengers can get to where they need to be.”

3 of 7 outletsfirst reported 18 Sepwording from The Guardian

What each outlet says

One AI summary per outlet of its latest article on this story, written from that article alone and checked against it. Open the article for the outlet's own words.

Evening Standard22 Sep

Airline companies are expressing frustration with recent disruptions in air traffic control, calling for Nats chief executive Martin Rolfe to resign. The latest disruption on Monday was caused by a connectivity issue at the Prestwick centre in Scotland, affecting numerous flights and adding to ongoing concerns over system resilience following previous incidents in September and August 2023. Nats handles…

Pressure mounts on air traffic control boss after latest disruption →13 articles from Evening Standard on this story
Daily Mail22 Sep

Britain's Air Traffic Services chief executive Martin Rolfe faced intense pressure to resign after a second technical malfunction in two weeks affected thousands of flights across multiple UK airports. The Prime Minister avoided directly backing Rolfe, instead stating that Transport Secretary Heidi Alexander would investigate the recurring issues. Airlines and industry figures criticized Rolfe for failing to improve…

Britain's air chief clings on after second flights meltdown in two weeks →4 articles from Daily Mail on this story
BBC21 Sep

Recent failures in UK air traffic control services have led to significant disruptions, with over 2,000 flight cancellations in early October affecting hundreds of thousands of passengers. A second incident at the Prestwick center a week later caused more than 200 cancellations and delays for tens of thousands of travelers. These issues are raising concerns about systemic problems within NATS, despite their…

Repeated air traffic control failures leave us in worrying territory →3 articles from BBC on this story
The Guardian18 Sep

A software defect in the UK’s air traffic control system led to a six-hour outage on September 8, disrupting flights across the country and affecting hundreds of thousands of passengers. The error occurred within a millisecond when processing aircraft codes got paused and resumed incorrectly, corrupting flight data. Transport Secretary Heidi Alexander called for an urgent investigation into why this issue wasn’t…

Flight chaos affecting hundreds of thousands caused in ‘millisecond’ by software error →
The Straits Times18 Sep

On September 18, British air traffic control operator NATS announced that a recent outage affecting hundreds of thousands of passengers was caused by a software defect in its flight data system. The incident led to 2,000 flight cancellations and cost airlines millions of pounds. Transport minister Heidi Alexander criticized the disruption as "completely unacceptable" and called for an independent review by the Civil…

British air traffic control outage caused by software defect, says operator →
South China Morning Post18 Sep

On September 8, over 2,000 UK flight cancellations occurred due to a brief software defect lasting only a millisecond within the National Airspace System managed by NATS. This glitch led to widespread disruption affecting hundreds of thousands of passengers at British airports and beyond. The report ruled out human error as the cause of the chaos.

Over 2,000 UK flight cancellations traced to millisecond software defect →
Show 1 more outlets
Toronto Star18 Sep

A millisecond software defect caused over 2,000 flight cancellations in and out of the UK last week, according to a preliminary report by NATS released on Friday. The incident occurred on September 8 and affected British airports extensively. NATS clarified that the issue was due to technical failure rather than human error, contrary to earlier speculations.

UK air traffic controller blames a millisecond-software glitch for flight cancellations →

Analysis

Agreed

Reported by outlets on both sides of the middle

No sentence was reported across the range.

Disputed

Picked by our model, which is sometimes wrong

No disagreement the check could confirm. That does not prove there is none.

Framing

How the first headlines put it

Stated as fact1
Words to watch (4)

Flight chaos affecting hundreds of thousands caused in ‘millisecond’ by software error The Guardian

Airports chaos caused by 'software glitch' officials find - as Government orders further probe but dodges sacking under-fire NATS boss Daily Mail

Air traffic chaos and compensation: 'Shutdown cost us more than £1,000' BBC

Flight ‘chaos’ this month caused by ‘software defect’ – report Evening Standard

How it changed

  1. 18 Sep

    The National Air Traffic Services (NATS) probe into the chaos on September 8 said it was caused by a 'software defect' in a small part of its systems.

    6 outlets · Daily Mail
  2. 21 Sep

    EasyJet has said the latest flight disruption “calls into question the resilience of NATS’ systems” after two air traffic control problems within one month.

    3 outlets · Evening Standard
  3. 22 Sep

    Their flight from Glasgow to Heathrow was cancelled, meaning they missed their transatlantic connection.

    2 outlets · Daily Mail

Coverage 24 articles

  • 22 Sep Pressure mounts on air traffic control boss after latest disruptionAirline companies are expressing frustration with recent disruptions in air traffic control, calling for Nats chief executive Martin Rolfe to resign. The latest disruption on Monday was caused by a connectivity issue at the Prestwick centre in Scotland, affecting numerous flights and adding to ongoing concerns over system resilience following previous incidents in September and August 2023. Nats handles…Evening Standard
  • 22 Sep Britain's air chief clings on after second flights meltdown in two weeksBritain's Air Traffic Services chief executive Martin Rolfe faced intense pressure to resign after a second technical malfunction in two weeks affected thousands of flights across multiple UK airports. The Prime Minister avoided directly backing Rolfe, instead stating that Transport Secretary Heidi Alexander would investigate the recurring issues. Airlines and industry figures criticized Rolfe for failing to improve…Daily Mail
  • 21 Sep The Morning Poll: Should air traffic bosses give you money back on your holiday if outages cause chaos?The Daily Mail asks readers whether air traffic control bosses should compensate travelers for disruptions caused by technical issues, citing a recent event where 227 UK flights were canceled due to a NATS air traffic control failure. The article invites viewers to participate in an online poll regarding this compensation issue.Daily Mail
  • 21 Sep Pressure mounts on air traffic control boss after latest disruptionThe CEO of Nats, the UK's main air traffic control service provider, faces increasing pressure to resign following recent disruptions affecting thousands of travelers. On Monday, a connectivity issue at Nats' Prestwick center in Scotland caused flight delays, though this was unrelated to a software fault from September 8 that led to over 2,000 cancellations. The Prime Minister expressed greater concern over the…Evening Standard
  • 21 Sep Repeated air traffic control failures leave us in worrying territoryRecent failures in UK air traffic control services have led to significant disruptions, with over 2,000 flight cancellations in early October affecting hundreds of thousands of passengers. A second incident at the Prestwick center a week later caused more than 200 cancellations and delays for tens of thousands of travelers. These issues are raising concerns about systemic problems within NATS, despite their…BBC
  • 21 Sep Air traffic control provider comes under fire after second issue in two weeksAir traffic controllers faced criticism after a second incident within two weeks caused flight disruptions. Ryanair reported over 25,000 passengers affected and more than 140 delayed flights on Monday. Industry leaders called for improvements in air traffic control resilience, emphasizing the importance of addressing system weaknesses to prevent future failures.Evening Standard
  • 21 Sep Wedding and Disneyland trips disrupted by air traffic control issuesNikki Ferguson and her family faced flight cancellations for their trip to Paris with EasyJet, delaying their planned Disneyland visit and causing significant stress. Similarly, a couple planning a wedding in Las Vegas had their British Airways flight from Glasgow to Heathrow cancelled, putting their wedding plans at risk as they may miss their connection to Las Vegas. Additionally, Sheila and Raymond McLaren…Evening Standard
  • 21 Sep Air traffic control provider comes under fire after second issue in two weeksAir traffic controllers faced criticism after another disruption within two weeks, affecting over 140 Ryanair flights and more than 25,000 passengers. The issue was caused by a connectivity problem at Nats’ Prestwick center in Scotland, leading to delays and cancellations at airports like Edinburgh, Belfast, Manchester, and Luton. Industry leaders called for improved resilience and accountability from the air…Evening Standard
  • 21 Sep Air traffic control issue ‘incredibly disappointing’ – Edinburgh Airport chiefEdinburgh Airport's chief executive, Mr Dewar, expressed frustration over recent air traffic control issues during an announcement at the airport. He noted delays and cancellations on Monday morning and criticized the system’s lack of robustness. First Minister John Swinney also commented, acknowledging the disruption and emphasizing the need for improved resilience in air traffic control services. Nats confirmed…Evening Standard
  • 21 Sep Some flights across Belfast airports and Londonderry hit by ‘technical issue’Belfast City Airport and Londonderry airports experienced cancellations and delays due to a technical issue, affecting mainly UK airport routes. This incident marks the second air traffic control problem in less than two weeks, causing further disruption for travelers. Passengers have been advised to check their flight statuses with their airlines before traveling.Evening Standard
Show all 24 articles
  • 21 Sep Full list of cancelled London flights as new air traffic control 'issue' causes disruptionA technical issue at an air traffic control center in Prestwick, Scotland, led to cancellations and delays for UK flights on Monday morning. National Air Traffic Services (NATS) reported disruptions mainly affecting flights between London and cities in northern England and Scotland. Ryanair estimated over 25,000 passengers would be impacted, while EasyJet criticized NATS' system resilience following a similar…Evening Standard
  • 21 Sep Flights disrupted again in Scotland and northern England by air traffic control 'technical issue'This morning, flights were disrupted across Scotland and northern England due to a technical issue at an air traffic control center operated by National Air Traffic Services (NATS) in Prestwick. Airlines including Ryanair, easyJet, British Airways, and Highlands and Islands Airports Limited reported delays or cancellations, advising passengers to check with their airlines for updates. The incident is separate from a…Daily Mail
  • 21 Sep Air traffic control centre 'technical issue' disrupts flightsA "technical issue" at an air traffic control center in Prestwick, Scotland, has caused delays and disruptions to flights heading north of Manchester and departing from Scottish airports. National Air Traffic Services (Nats) reported that engineers are investigating the problem, while Highlands and Islands Airports Limited informed passengers about schedule impacts across their airports, including Dundee, Inverness…Evening Standard
  • 18 Sep UK air traffic controller blames a millisecond-software glitch for flight cancellationsA millisecond software defect caused over 2,000 flight cancellations in and out of the UK last week, according to a preliminary report by NATS released on Friday. The incident occurred on September 8 and affected British airports extensively. NATS clarified that the issue was due to technical failure rather than human error, contrary to earlier speculations.Toronto Star
  • 18 Sep Flight disruption ‘not caused by any incorrect actions’ – reportA software defect led to over 2,000 flight cancellations on September 8, affecting hundreds of thousands of passengers and causing disruptions that continued into the following day. The National Air Traffic Services (Nats) released a preliminary report confirming the issue was not due to human error but rather an instantaneous fault in the system used for assigning aircraft identification codes. Nats chief executive…Evening Standard
  • 18 Sep Flight disruption ‘not caused by any incorrect actions’ – reportAn air traffic control issue on September 8 led to over 2,000 flight cancellations in the UK due to a software defect that caused aircraft identification codes to malfunction for just a millisecond. National Air Traffic Services (Nats) released a preliminary report stating that the disruption was not caused by human error but rather an automatic system failure. The incident affected hundreds of thousands of…Evening Standard
  • 18 Sep Flight disruption ‘not caused by any incorrect actions’ – reportAn air traffic control issue on September 8 led to over 2,000 flight cancellations in the UK, affecting hundreds of thousands of passengers. National Air Traffic Services (Nats) released a report stating that the disruption was caused by a software defect rather than any human error or malicious activity. The problem arose from a millisecond fault in the system responsible for assigning aircraft codes, leading to…Evening Standard
  • 18 Sep Over 2,000 UK flight cancellations traced to millisecond software defectOn September 8, over 2,000 UK flight cancellations occurred due to a brief software defect lasting only a millisecond within the National Airspace System managed by NATS. This glitch led to widespread disruption affecting hundreds of thousands of passengers at British airports and beyond. The report ruled out human error as the cause of the chaos.South China Morning Post
  • 18 Sep British air traffic control outage caused by software defect, says operatorOn September 18, British air traffic control operator NATS announced that a recent outage affecting hundreds of thousands of passengers was caused by a software defect in its flight data system. The incident led to 2,000 flight cancellations and cost airlines millions of pounds. Transport minister Heidi Alexander criticized the disruption as "completely unacceptable" and called for an independent review by the Civil…The Straits Times
  • 18 Sep Flight ‘chaos’ this month caused by ‘software defect’ – reportA software defect in aircraft code allocation led to over 2,000 flight cancellations on September 8, affecting hundreds of thousands of travelers through major UK airports like Heathrow and Gatwick. National Air Traffic Services (Nats) released a report stating the issue was not due to human error but confirmed it as a software problem unrelated to previous outages in 2023. The Civil Aviation Authority is conducting…Evening Standard
  • 18 Sep Flight chaos affecting hundreds of thousands caused in ‘millisecond’ by software errorA software defect in the UK’s air traffic control system led to a six-hour outage on September 8, disrupting flights across the country and affecting hundreds of thousands of passengers. The error occurred within a millisecond when processing aircraft codes got paused and resumed incorrectly, corrupting flight data. Transport Secretary Heidi Alexander called for an urgent investigation into why this issue wasn’t…The Guardian
  • 18 Sep Airports chaos caused by 'software glitch' officials find - as Government orders further probe but dodges sacking under-fire NATS bossA preliminary report by National Air Traffic Services (NATS) reveals that a software glitch caused widespread air traffic control system failures on September 8, resulting in over 2,000 flight cancellations and significant passenger disruptions. Transport Secretary Heidi Alexander has ordered the Civil Aviation Authority to conduct an independent review of NATS' findings to investigate why the issue was not detected…Daily Mail
  • 18 Sep Software glitch caused travel chaos, says air traffic control bodyNats has identified a software defect as the cause of an air traffic control system failure in early November, which led to over 2,000 flight cancellations and impacted hundreds of thousands of passengers across several major UK airports including Heathrow and Gatwick. The government had previously investigated cyber attacks and other potential causes but ruled them out, with the Ministry of Defence also denying…BBC
  • 15 Sep Air traffic chaos and compensation: 'Shutdown cost us more than £1,000'Catie and Phil Allen's planned trip to Slovenia was cancelled due to a four-hour shutdown of the UK’s air traffic control system on Tuesday. Despite receiving a refund from British Airways, they are out approximately £1,300 for unused accommodation and excursions booked separately. The article highlights that while airlines must offer refunds or rebooking options when flights are canceled, passengers often face…BBC

Built 2026-10-14 from 24 articles. Every sentence on this page is quoted from the linked article; nothing was written by a model except the Summary and the items marked AI, which cite their sources, and the questions and labels under "Disputed". Photos are from the outlets that covered the story, never from articles our check marks sensitive.

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