An investigation is currently underway into the widespread air traffic control failure that occurred on Bank Holiday Monday, August 28, 2023, causing significant disruption to flights across the UK and Europe. The incident, which was confirmed not to be a cyber-attack, stemmed from a technical fault within the National Air Traffic Services (NATS) system.
The failure was triggered when an "unusual piece of data" was automatically entered into the air traffic control system. This led the automated system to shut down, forcing controllers to switch to a manual backup system. This switch significantly reduced the number of flights that could be managed at any given time, leading to severe delays and cancellations.
As a direct consequence of the fault, over 1,500 flights were cancelled, stranding thousands of passengers and causing ripple effects that lasted for several days. Airlines like Ryanair have called for NATS to reimburse them for the costs incurred due to the disruption.
The Civil Aviation Authority (CAA) is reviewing the incident report submitted by NATS. Separately, Transport Secretary Mark Harper has requested an independent review of the event to be conducted by an independent panel. The National Cyber Security Centre (NCSC) confirmed that the issue was not the result of a cyber-attack. The full report on the incident is anticipated by spring 2024.
Key Points
- Bank Holiday Monday, August 28, 2023 (date of incident)
- Over 1,500 flights cancelled
- Report due by spring 2024
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