HANGAR TALK


QAI Aviation Receives FAA Approval for 5G Filter STC for EC135


QAI Aviation recently announced the FAA approval of its 5G filter Supplemental Type Certificate (STC) for the EC135 helicopter. This innovative solution is designed to enhance the performance of helicopters in 5G environments by minimizing signal interference and optimizing avionics functionality.


The STC complies with FAA AD 2023-11-07 regarding limitations due to 5G interference. AD 2023-11-07 was issued due to findings that radio altimeters may not function as intended when subjected to interference from wireless broadband operations within the 3.7–3.98 GHz frequency range (5G C-Band). These undetected anomalies in radio altimeter reading could compromise the ability to maintain safe flight and landing. The STC was designed to be a simple installation in the field and mitigate 5G interference for aircraft with the KRA-405B installed.


The STC is currently approved for the EC135 model, with expansion to additional leading helicopter platforms underway in the Approved Model List (AML). This marks the initial phase of a broader rollout, ensuring safety and compliance for a wider range of operators and aircraft.


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