(Jan 6): US aviation authorities proposed rules that could require airlines to spend billions of dollars replacing or updating critical flight safety equipment to accommodate the sale of new wireless spectrum mandated in US President Donald Trump’s signature tax and spending package.
The US Federal Aviation Administration said the regulations, released on Monday (Jan 5), would require airlines to upgrade radio altimeters — instruments that measure a plane’s altitude — so that they are able to withstand interference from wireless signals across neighbouring spectrum bands.
The FAA estimates “the total undiscounted cost” to retrofit planes with the new equipment will be US$4.49 billion. The rules will undergo a public comment period and won’t be effective until the FAA releases a final rule.
The US Federal Communications Commission said in its own proposed rule in November that it was considering ways to help cover the cost of the retrofits, including through proceeds from its auction.
The FAA’s proposal comes just a few years after the airline industry and wireless carriers, such as AT&T Inc and Verizon Communications Inc, clashed over the expansion of new 5G services on a part of the spectrum known as the lower C-Band. At the time, the airlines and the FAA said the 2022 rollout could disrupt radio altimeters, which are critical for safe flight.
The crisis threatened to upend US air travel but ultimately a compromise was reached under which wireless providers agreed to temporarily limit power levels near major airports and the FAA required airlines to install new protective equipment.
See also: Cathay Pacific to cut costs by 20% by 2030 in efficiency push
Trump’s Big Beautiful Bill required the FCC to sell at least 100MHz of spectrum in the upper C-Band. Senator Maria Cantwell, the top Democrat on the Senate Committee on Commerce, Science and Transportation, warned the upper C-band spectrum is even closer to the band used by altimeters and poses similar risks.
Under the law, the FCC would be required to auction off the critical portion of spectrum by 2027.
Uploaded by Arion Yeow
