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

According to the news on the morning of January 10, Beijing time, the Federal Aviation Administration (FAA) said on Monday that it is making a request to promote US passenger and cargo aircraft to install a radio altimeter capable of resisting 5G C-band interference or an approved 5G signal shielding instrument by early 2024.

Earlier this year, flights at some US airports were affected by concerns that 5G services might affect aircraft altimeters. The altimeter provides data on the altitude of the aircraft from the ground, which is very important for aircraft landing in bad weather.

The airworthiness directive proposed by FAA will come into effect in February 2024, similar to another directive that came into force in December 2021. The latter prohibits passenger and cargo aircraft from operating near wireless transmitters in the 5G C band unless specifically approved by the FAA.

FAA also made another request this time, urging airlines to revise the plane's flight manual to prohibit landing in low visibility after June 30, unless the aircraft has completed the required modifications.

Verizon and AT&T, two major US mobile operators, voluntarily agreed in June last year to postpone the launch of the 5G C band until July 2023, giving airlines time to complete the modification of the aircraft to ensure that the aircraft is not interfered with by 5G signals. The 2021 FAA directive also relies on voluntary agreements.

However, some international airlines have privately indicated that they are not willing to install signal shielding devices unless required by law by FAA, according to FAA officials.

"Airlines are trying to ensure that their fleets are equipped with compliant radio altimeters, but the global supply chain still lags behind current demand," said Airlines for America, an industry group representing airlines such as American, Delta and United. Any regulatory deadline must take into account this reality. "

CTIA, a mobile communications industry group, said: "FAA's altimeter update schedule is reasonable and realistic. 5G C band can coexist with aviation safety."

Last October, Billy Nolen, acting director of FAA, wanted to delay the use of the 5G C band by some small operators because of aviation safety concerns. In an email on October 21, he said the FAA wants the Federal Communications Commission (FCC) to enforce voluntary hedging measures agreed by AT&T and Verizon earlier last year to 19 small operators and other holders of spectrum resources.

In January 2022, airline chief executives warned that a "catastrophic" aviation crisis was imminent due to the deployment of 5G technology, which could bring almost all air traffic to a standstill. However, an agreement reached shortly before the 2022 deadline did not stop dozens of foreign airlines from canceling international flights to the United States.

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