US Transportation Secretary blames copper cable work for aviation disruptions

US Transportation Secretary Sean Duffy attributed widespread aviation disruptions to restoration work on old copper communication cables at a remote Federal Aviation Administration facility. The technical failure caused thousands of flight cancellations and delays across the United States on November 14, 2026. This incident resulted in significant travel chaos for both commercial and private aviation sectors.

Scale of flight disruptions

The impact of the technical failure was extensive throughout the United States. On Friday, November 14, 2026, approximately 12,000 flights could not be rescheduled. This group of grounded flights included 9,000 commercial flights and 3,000 private flights. The disruption extended into the following day, as more than 16,000 flights were cancelled across the United States on November 14 and November 15, 2026.

The failure occurred when systems were isolated during work at the specific site. This isolation led to communication issues between air traffic controllers and pilots. Specific technical details indicate that the incident involved more than 1,000 connection attempts every four to five seconds. These frequent attempts caused significant disturbances to radar and communication systems.

Causes of the technical failure

Secretary Sean Duffy clarified that the disruption was not caused by a foreign cyberattack. He also stated that the recent SMART platform upgrade was not the cause of the failure. The SMART platform is a recent upgrade designed to assist pilots with navigation in adverse weather conditions.

The current issue appears to be related to the replacement of aging infrastructure. Secretary Sean Duffy stated, "The issue is not a foreign cyberattack; it appears to be a failure of either equipment or contractor procedures." L3 Harris Technologies was identified as the contractor responsible for the copper cable replacement work that led to the disruption.

Infrastructure modernization needs

The recent failure has prompted calls for increased investment in national aviation systems. Secretary Sean Duffy requested additional funding from Congress to modernize air traffic control infrastructure. The Secretary expressed frustration regarding the timeline for these necessary upgrades, asking, "How much longer must we wait?"

The United States has already spent $12.5 billion on these infrastructure upgrades. However, the total required cost to complete the modernization program is estimated at $50 billion. The scale of the required investment highlights the ongoing challenges in maintaining and updating the communication networks used by the Federal Aviation Administration.