2,000 UK flight cancellations caused by ‘previously unknown defect’ that happened in the ‘space of a…

• Nats report reveals a software defect caused days of flight disruption
• The defect occurred in the 'space of a millisecond'
• Severity of the incident was not identified until 2.5 hours later

The UK airspace came to a grinding halt earlier this month after the UK’s National Air Traffic Services (Nats) announced that there was a glitch in its flight processing system.

Following an investigation, NATS has determined that the fault was caused by a manual request for a squawk code that became corrupted, forcing the National Airspace System (NAS) that covers the UK to be restarted, grounding and diverting thousands of aircraft.

The disruption began in the morning of 8 September, and while the initial glitch was fixed within six hours, the subsequent disruption across the UK lasted over two days leaving hundreds of thousands of passengers stranded.

Squawk code corrupted in the ‘space of a millisecond’

Squawk codes are...

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