potrebbero dire “ve l’avevamo detto“…
“In early 2021, the Federal Communications Commission (FCC) awarded the mobile wireless industry radio spectrum to operate 5G transmissions in the “C-Band,” or 3.7-3.98 GHz, adjacent to the spectrum used by radar altimeters. This approval was made despite the aviation industry informing the FCC since 2018 of the need to ensure that radar altimeters are protected from 5G interference.”
Source : The Guardian
US airline chiefs have warned that the introduction of a new 5G service could cause US commerce to “grind to a halt” due to possibly grounding a significant number of aircraft and might “strand tens of thousands of Americans overseas”.
Warnings of an impending “catastrophic” crisis in aviation came in a letter sent to White House National Economic Council director Brian Deese, transportation secretary Pete Buttigieg, Federal Aviation Administration (FAA) administrator Steve Dickson and Federal Communications Commission (FCC) chairwoman Jessica Rosenworcel, Reuters reported Monday.
“Unless our major hubs are cleared to fly, the vast majority of the traveling and shipping public will essentially be grounded,” the letter, signed by the chief executives of American Airlines, Delta Air Lines, United Airlines, Southwest Airlines and Jet Blue, as well as freight and parcel carriers UPS and FedEx, said.
They warned new C-Band 5G technology could interfere with critical airplane instruments such as radio altimeters – which judge the distance from the ground to the bottom of the flying vessel – and have an impact on low-visibility operations.