The FAA has determined that some GPS-guided approaches will continue to be possible at certain airports like Miami and Phoenix. Some notices include details of how instrument approaches at major airports are impacted. The wireless industry provided additional transmitter location data and the FAA said it was able to determine that in the initial 5G deployment, aircraft will be able to safely land in low-visibility conditions on some runways without restrictions. Many of the notices say certain procedures are unavailable unless the FAA approves alternative methods of compliance "due to 5G C-Band interference." The FAA did not respond to a question about how many in total were to be published. More than 300 notices had been posted by 01:00 ET, including many around major airports and hospitals where medical helicopters are used. The FAA began publishing what are known as 'Notices to Air Missions' at midnight Thursday local time offering details on "aircraft with untested altimeters or that need retrofitting or replacement will be unable to perform low-visibility landings where 5G is deployed." They also agreed to delay deployment for two weeks, averting an aviation safety standoff. 3 agreed to buffer zones around 50 airports to reduce the risk of interference.
AT&T (T.N) and Verizon Communications (VZ.N), which won nearly all of the C-Band spectrum in an $80-billion auction last year, on Jan.