A large-scale plane crash in the United States occurred due to the replacement of copper cables with optical fibers, the head of the Department of Transportation said.
According to the US Secretary of Transportation, Sean Duffy, the problems arose during an attempt to modernize the communication system of the air traffic controllers, when copper cables were replaced by optical fibers. This caused a failure in the air traffic control system.
In the past, the Federal Aviation Administration in the US temporarily banned flights from all airports in the country, which led to delays and cancellations of thousands of flights. The restrictions have now been lifted and flights have been fully resumed.