Wall Street Journal

Several international airlines canceled some US-bound flights after American wireless operators and aviation officials were unable to fully resolve a months-long standoff over the launch of new 5G signals. AT&T and Verizon agreed to temporarily water down expansion plans for 5G wireless service to address air-safety regulators’ concerns about the network signals’ effect on aircraft instruments.

Fiber-optic cable, which carries 95 percent of the world’s international internet traffic, links up pretty much all of the world’s data centers, those vast server warehouses where the computing happens that transforms all those 1s and 0s into our experience of the internet. Where those fiber-optic connections link up countries across the oceans, they consist almost entirely of cables running underwater—some 1.3 million kilometers (or more than 800,000 miles) of bundled glass threads that make up the actual, physical international internet.

The chief executives of major passenger and cargo airlines said there could be significant flight disruptions when new 5G service goes live in the US, unless implementation of the wireless service within 2 miles of major airport runways is delayed. The outlook had worsened for flight disruptions from the planned rollout of new high-speed wireless services, the airline executives said in a letter to US officials.