Software Glitch Disrupts UK Air Traffic, Sparks Widespread Chaos
A major failure in the UK’s air traffic control system, attributed to a “software defect,” caused significant disruptions earlier this month, affecting over 2,000 flights and leaving hundreds of thousands of passengers stranded. The National Air Traffic Service (Nats) confirmed the malfunction, which occurred in a fraction of a second, led to the creation of corrupted data, forcing flight restrictions to uphold safety.
Timeline and Impact of the Incident
The technical issue arose at 10:00 am on 8 September, but its severity was not recognised until over two hours later. A system reboot commenced after 3:15 pm, with normal airspace operations resuming by 7:30 pm. The cancellation of flights impacted major UK airports, including Heathrow, Gatwick, Luton, and Glasgow, causing chaos that persisted for several days as airlines grappled with repositioning aircraft and crew.
Nats CEO Martin Rolfe, while addressing the incident, dismissed calls for his resignation over what he described as a “very, very obscure” software problem. Despite the disruption, Rolfe emphasised that passenger safety was never compromised. He expressed deep regret for the inconvenience, stating that Nats had extensively tested the systems, but such rare issues are intrinsically complex.
Response from Authorities and Airlines
Heidi Alexander, the Transport Secretary, labelled the disruption as “unacceptable” and criticised the delayed identification of the problem. She announced a Civil Aviation Authority review to investigate the failure. Airlines, represented by industry body Airlines UK, demanded immediate compensation from Nats to cover incurred expenses and called for a more resilient air traffic control system.
Tim Alderslade, CEO of Airlines UK, highlighted the burden placed on passengers and airlines due to the system failure, advocating for improvements and accountability from Nats.
Passenger Experiences and Compensation Concerns
Among the affected was Addie Kitson, who faced unexpected expenses after her flight from China to London was redirected to Stockholm. Stuck in the airport, she incurred nearly £100 in costs for essentials and lamented that compensation rules did not reflect the frequent nature of such outages. Her experience underscores the broader dissatisfaction among passengers over support and compensation eligibility.
This incident marks the third significant air traffic control disruption in recent years, with previous notable failures occurring during the August bank holiday of 2023 and a smaller outage in 2025, both causing substantial passenger inconvenience.
Reporting based on coverage first published by bbc.co.uk.