A 20-minute system outage in the UK's air traffic control on Wednesday triggered widespread disruptions across airports nationwide. While the exact cause remains under investigation, preliminary reports suggest a technical glitch within the system's core infrastructure. The brief interruption led to a cascade of delays and cancellations as airlines struggled to recover schedules, impacting thousands of passengers. Authorities are working to determine the root cause and implement preventative measures to avoid future incidents. The incident has raised concerns about the resilience of critical national infrastructure and the potential for cascading failures.