Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizens for the delivery of clues on the way! CTOnews.com June 25, according to the Associated Press, U.S. Secretary of Transportation Peter Boutigig (Pete Buttigieg) recently warned U.S. airlines that from July 1, some flights may be disturbed by 5G signals due to uncompleted modifications.

▲ map sources PexelsAT&T, Verizon and other U.S. mobile operators will enhance their C-band 5G signals from July 1. Some aviation experts believe that the C-band signal is very close to the frequency used by the radio altimeter that measures the plane's altitude from the ground, and although the newer altimeter is immune from interference, some airlines complain that it is not possible to retrofit all aircraft in time because of supply chain problems.

Butigig said that only aircraft modified with new equipment can land in poor visibility. It is not clear whether the spectrum conflict will lead to significant flight delays. At the beginning of last year, when a similar situation occurred, a small number of flights were cancelled or diverted.

Delta said about 190 of its more than 900 aircraft could not be equipped with updated radio altimeters by the deadline and could face restrictions on operating in bad weather. American Airlines, Southwest Airlines and Frontier Airlines said they had modified all aircraft.

The Federal Communications Commission, which grants 5G licenses to mobile operators, has said there is no risk of interference, but the Federal Aviation Administration has sided with airlines. Under pressure from the US government, wireless operators had agreed to postpone the full deployment of the new network around major airports until July 1.

CTOnews.com previously reported that the International Air Transport Association (IATA) said in February that the US request to modify aircraft altimeters to ensure that flights were not disturbed by 5G signals could cost the industry at least $637 million (CTOnews.com Note: currently about 4.58 billion yuan).

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