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The Federal Aviation Administration has issued a new airworthiness directive to Boeing 787 operators ahead of Verizon and AT&T's rollout of 5G service in the C-band spectrum on Jan.

According to the agency, the directive will require operators to take additional precautions when landing on wet or snowy runways at airports where 5G C-band service is deployed.

The Federal Communications Commission granted C-band licenses to the telecommunications giants last year after Verizon and AT&T bid $45.45 billion and $23.41 billion, respectively, at an auction to help bolster their existing 5G networks.

5, Verizon and AT&T agreed to an additional two-week delay requested by the Department of Transportation in order to give the FAA more time to study 5G's potential impact on radio altimeters.

A Boeing spokesperson told FOX Business it is "working closely with airlines, radio altimeter suppliers, the telecommunication industry and regulators to ensure that every commercial airplane model can safely and confidently operate when 5G is implemented in the United States."

Under the terms of an agreement with the FAA, AT&T and Verizon will provide data on base stations, operating characteristics, and planned deployment locations and "continue to work in good faith with aviation stakeholders to support the technical assessment of individual altimeters and airport environments." 

Assuming no additional issues, AT&T and Verizon will be able to use their C-band spectrum licenses without extra restrictions after July 5

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