European airlines Airbus and US Boeing, in a letter to the U.S. Department of Transportation, have expressed “concern” that their aircraft’s communications systems could be damaged after the introduction of 5th generation communications.

An Airbus spokesman told AFP: “Airbus Americas director Jeff Knettle and Boeing chairman David Calhoun have written a letter to US Secretary of Transport Pete Buttigieg outlining the aviation industry’s shared concerns about 5G use in the United States.”

The source added that “Airbus” and “Boeing” are working with other actors in the aviation industry in the United States to understand the possible interference of 5G networks with radar altimeters.

“We are cooperating with aviation authorities, government officials, airlines and industry groups to ensure the safe operation of aircraft around the world,” Boeing wrote, adding that it was putting pressure on U.S. regulators in a lawsuit to stop the aviation sector against mobile operators.

The department heads of “Verizon” and “AT&T” were scheduled to use the 3.7 – 3.8 GHz bands on December 5, and were offered tens of thousands of dollars in February after submitting the offer, but they agreed in early November. The launch of the service should be postponed to January, in the wake of concerns raised by the U.S. aviation agency about problems that could interfere with aircraft measuring radar altitude.

They asked for more information about devices operating on frequency bands that can be used by fifth generation networks.

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