FCC C-band

Radar altimeter interference from 5G signals can take the form of loss of radar altitude information or, worse, incorrect radar altitude information unknowingly being generated . … This is in addition to radio altimeter use for autoland and in Category (CAT) II/III and Required Navigation Performance (RNP) AR approaches.

During the two-week delay in deploying new 5G service, safety experts determined that 5G interference with the aircraft’s radio altimeter could prevent engine and braking systems from transitioning to landing mode , which could prevent an aircraft from stopping on the runway.23 Şub 2022

The FAA has issued several airworthiness directives and regulatory policy updates in recent months focused on preventing signals from 5G C-Band towers causing performance issues for aircraft radio altimeters , especially during approaches and landings in low visibility at airports located closest to the towers.4 Şub 2022