# Why Ground Issues Affect Flights Thousands of Miles Away

> A nationwide flight grounding caused by communication system gaps shows how ground problems can disrupt air travel across the country.
- Title: Why Ground Issues Affect Flights Thousands of Miles Away
- Summary: A nationwide flight grounding caused by communication system gaps shows how ground problems can disrupt air travel across the country. U.S.
- Keywords: u.s. air traffic control, regional air traffic control centers, faa, communication system gaps, flight grounding, copper wire, fiber optic lines, radar feeds, airplane safety, intermittent communication, Seattletimes
- Source: Seattletimes — https://seattletimes.com/business/why-a-problem-on-the-ground-can-affect-flights-thousands-of-miles-away-among-other-issues
- Read time: 1 min
- Topics: u.s. air traffic control, regional air traffic control centers, faa, communication system gaps, flight grounding, copper wire, fiber optic lines, radar feeds, airplane safety, intermittent communication, news, local
## Grounding Causes Communication Gaps
U.S. regional air traffic control centers experienced communication gaps that grounded flights for over four hours on Friday.

> Specifically, we had over 1,000 connection attempts every 4 to 5 seconds
## Secretary of Transportation Explains
Transportation Secretary Sean Duffy said the grounding was caused by intermittent communication issues from outdated copper wire systems.

> Specifically, we had over 1,000 connection attempts every 4 to 5 seconds
## System Overload Leads to Grounding
The system overloaded antiquated equipment, causing intermittent communications and radar gaps that lasted more than four hours.

> Specifically, we had over 1,000 connection attempts every 4 to 5 seconds
## Contractor Work Causes Disruption
A contractor was replacing old copper wire with fiber optic lines in a remote location when the grounding occurred.
## Regional Centers Guide High-Altitude Flights
The U.S. operates 22 regional air traffic control centers that manage flights above 10,000 feet across the country.
## Communication System Layers
Pilots move through three layers of air traffic control: airport towers, terminal radar centers, and regional centers.
## Rolling Outage Affects Multiple Centers
The communication issue was a rolling outage that impacted 17 of 22 regional air traffic control centers nationwide.
## Pilots Use Backup Systems
Pilots can still communicate via satellite phones or radio signals during communication disruptions.
## System Overhaul Progress
The government has replaced miles of copper wires with fiber optic lines but the work is far from complete.
## FAA Urges More Funding
Transportation Secretary Sean Duffy urged Congress to provide more funding for the air traffic control system overhaul.
## Key takeaway

U.S. regional air traffic control centers experienced communication gaps that grounded flights for over four hours, affecting multiple centers nationwide.