US grounds all flights after ‘communication issue’

The United States began a nationwide grounding of departing flights in response to a communications issue affecting air traffic control operations, with the action described by reports as an extraordinary disruption to the nation’s air travel system. The grounding directive was issued by the federal aviation regulator, and officials indicated that the investigation into the root cause was being conducted by the appropriate aviation agency in coordination with U.S. authorities. No specific airports, flight numbers, or timelines beyond the ongoing inquiry were disclosed in the material, but the measure was described as blanket and nationwide for outbound flights.

Multiple outlets characterize the event as a broad safety and operations emergency requiring centralized management as regulators and air-traffic authorities sought to understand and contain the disruption. The Financial Times notes that the directive grounded all departing flights and is described as rare, signaling a broad-scale response to what authorities termed an extraordinary disruption. The exact trigger or root cause had not been disclosed in the available material, but the action clearly affected outbound operations from U.S. airports.

The grounding is connected in reporting to a concurrent global technology outage involving Microsoft services, which began on Thursday and extended into a second day. AirLive reports that the outage disrupted access to Microsoft 365 applications such as Exchange Online, Outlook, Teams, SharePoint, and Copilot across at least 74 countries, while Microsoft stated there was no evidence of a cyberattack. Engineers were working to restore server capacity and authentication processes, with airlines experiencing delays and cancellations as they struggled to maintain passenger communications and internal coordination. The grounding is described as a blanket measure for departing flights, with limited details on whether arrivals or certain airports faced different handling.

Within the U.S. context, CBC describes a nationwide air-traffic stoppage that halted departures at airports across the country, including Reno-Tahoe International and Reno-Stead, with travelers urged to verify flight updates directly with their airlines as regulators and air-traffic control authorities continued outreach. The CBC summary frames the event as part of a national disruption to air travel prompted by extreme weather and the global technology outage, creating cascading effects on airline operations and traveler communications.

AirLive adds that the outage impacted airline operations indirectly through communications and back-office systems, with SpiceJet in India singled out for canceling three departures and delaying two others from New Delhi due to internal coordination challenges tied to the outage. The reporting describes airlines scrambling to reroute or manage customer support as emails and other communications systems faced outages, complicating passenger inquiries and booking updates.

The Kyiv Independent contributes context focused on a separate aviation disruption: a mass drone attack on Moscow affecting flight operations at regional airports. The report does not provide aircraft types, drone counts, or specific airports, and the piece centers on broader consequences for flight schedules rather than technical details. The Kyiv Independent notes the article as background for how air travel networks can be affected by regional incidents, without asserting causality to the U.S. grounding.

France 24 presents a synopsis of the U.S. action, quoting the transportation secretary as describing a nationwide halt of flight operations due to a reported communications problem affecting air-traffic-control centers. Officials characterized the stop as a precautionary measure designed to manage potential vulnerabilities in air traffic management, though details about the centers involved or the scope of impact were not disclosed. No timeline for resumption was given in the material.

Fox 59 covers the grounding from a operational-impacts lens, noting that the Federal Aviation Administration instructed all departing traffic to remain groundstopped until further notice, with Indianapolis-area operations highlighted as an example of outbound service being held. The piece reiterates that technicians are investigating the cause of the disruption and that Transportation Secretary Sean Duffy commented on the ongoing examination, without providing a timeline for resolution. The material emphasizes the investigation and directive as the core elements of the report.