✈️FAA Airworthiness Directive for MHI RJ Aviation on 5G Interference
Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier Inc.) Airplanes
Summary
The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 and 440), CL-600-2C10 (Regional Jet Series 700, 701, and 702), CL-600- 2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by the determination that radio altimeters cannot be relied upon to perform their intended function if they experience interference from wireless broadband operations in the 3.7-3.98 GHz frequency band (5G C-Band). This AD requires installing a new radio frequency (RF) bandpass filter on the coaxial line between the radio altimeter and the receive antenna in the aft equipment compartment. The FAA is issuing this AD to address the unsafe condition on these products.
Agencies
- Transportation Department
- Federal Aviation Administration
Business Impact
$$ - Med
The FAA's new airworthiness directive (AD) requires specific compliance actions for operators of certain regional jet models, prompting potential costs for installation of new equipment (RF bandpass filter) to mitigate interference from 5G technology. These compliance costs are significant, affecting business operations and financial planning in the aviation sector.