At the heart of the 5G debate is a small but critical device called the radio altimeter. It measures an aircraft’s exact height above the ground and feeds that data into other safety and navigation ...

Airlines operating in the US may have to upgrade their aircraft radio altimeters again at a cost of billions of dollars, to avoid potential interference with cell networks following the Trump ...

The Federal Aviation Administration (FAA) intends to require airlines and other operators to upgrade radio altimeters again to head off fresh interference threats ...