Avionics
HAI Requests Expanded Radar Altimeter Exemption
Continuing 5G concerns prompt requested for expanded radar altimeter exemption for air ambulances

The Helicopter Association International (HAI) has formally petitioned the FAA for an expanded exemption to the requirement for properly functioning radar altimeters in helicopter air ambulances to cover both Part 91 and 135 operations due to the potential of interference from 5G C-band cellular service. 


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