Flight chaos caused by software defect, says air traffic control body
A software error lasting a millisecond caused a major air traffic outage in the UK, grounding thousands of flights and affecting hundreds of thousands of passengers. An air traffic control body and a subsequent review identified the cause as a software defect, with the Financial Times reporting the bug was linked to legacy software. The glitch led to widespread flight cancellations across the region.
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- ✓ A software error lasting a millisecond caused an air traffic outage.
- ✓ The outage grounded thousands of flights.
- ✓ Hundreds of thousands of people experienced flight chaos.
- ✓ A UK air traffic control body attributed the cancellations to a software glitch.
What changed
A review identified the cause of the outage as a legacy software bug.
Live updates
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Software defect caused UK air traffic outage
A software error lasting a millisecond caused a major air traffic outage in the UK, grounding thousands of flights and affecting hundreds of thousands of passengers. An air traffic control body and a subsequent review identified the cause as a software defect, with the Financial Times reporting the bug was linked to legacy software. The glitch led to widespread flight cancellations across the region.
Why it matters
Air traffic control systems manage the safe separation of aircraft in congested airspace. A failure in these systems forces controllers to halt flights to prevent collisions. This event highlights vulnerabilities in the aging digital infrastructure used for national aviation safety.
What is confirmed
- A software error lasting a millisecond caused an air traffic outage.
- The outage grounded thousands of flights.
- Hundreds of thousands of people experienced flight chaos.
- A UK air traffic control body attributed the cancellations to a software glitch.
Still unconfirmed
- The software bug was caused by legacy software.
What to watch next
- Details on the specific legacy software version involved
- Official timeline of the system recovery process
- Regulatory decisions regarding software updates for air traffic control
confidence 95%Sources used for this update (6)
- BBC — Flight chaos caused by software defect, says air traffic control body
- The Guardian — Flight chaos for hundreds of thousands was caused in ‘millisecond’ by software error
- Sky News — 'Millisecond' software error caused air traffic outage that grounded thousands of flights
- AP News — UK air traffic controller blames a millisecond-software glitch for flight cancellations
- Financial Times — UK air traffic outage caused by ‘legacy’ software bug, says review
- www.yahoo.com — LA Metro bus crash: Arraignment postponed for suspect
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