US aviation officials lifted a nationwide ground stop after an air-traffic communications failure disrupted thousands of flights. Officials said ageing equipment overloaded and ruled out a cyber-attack.
US officials say the disruption was caused by old equipment overloading and not a cyber-attack.
Why it matters
A single technical failure shows how connected aviation, business and public services have become, and how quickly a national system can be disrupted.
Source: BBC News. Image: BBC News.
