A software defect is reported to be the cause of travel disruption that grounds or delays thousands of flights, according to UK outlet reporting. NATS, the air navigation service provider, says the issue affects operations and triggers widespread disruption across the network.

NATS chief Martin Rolfe addresses the incident, stating that “at no point was safety in question.” He apologises for the disruption and for the impact on passengers and airlines. Reporting also frames the event as a technical failure rather than a security or safety incident, with attention focused on operational consequences and the immediate response.

Different outlets summarise the same underlying explanation—an alleged software defect—and the same assurance about safety, while varying mainly in emphasis. One focuses on the scale of flight grounding, while another highlights the chief executive’s remarks about safety and the apology.