Update on 5G network implementation in the U.S.

The Federal Aviation Administration (FAA) recently issued an Airworthiness Directive revising landing requirements for business aircraft at airports where 5G interference can occur.  

According to the directive: “Because the proposed 5G deployment involves a new combination of power levels, frequencies, proximity to flight operations, and other factors, the FAA must impose restrictions on flight operations using certain types of radio altimeter equipment close to antennas in 5G networks.” 

The 5G network signals can disrupt an aircraft’s radio altimeter, which measures the height of the aircraft above terrain immediately below the aircraft. The altimeter is crucial for pilots to land in low visibility conditions.” 

Bombardier has published the following documents (AW) in the Library of the Customer Portal and the FONs in the Global platforms FONM which is part of the flight manuals to assist Bombardier business jet operators with this transition.  
 
All Challenger & Global models 

• AW000-34-0010, Rev 04 5G – Risk of Potential Adverse Effects on Radio Altimeters 

Challenger aircraft: 

• AW600-34-2627 Potential Adverse Effects on Radio Altimeters when Operating in the Presence of 5G C-Band Interference  

• AW300-34-0392 Potential Adverse Effects on Radio Altimeters when Operating in the Presence of 5G C-Band Interference 

Global aircraft: 

• FON AVNC-038-NC, 5G - Risk of Potential Adverse Effects on Radio Altimeter 

Learjet aircraft: 

• AW34-071  FAA AD 2021-23-12 – 5G C-Band Possible Interference with Radio Altimeter Systems