Superseded by FAA AD 2023-12-12
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Boeing 757 and 767 airplanes must revise their airplane flight manuals to incorporate the specified procedures related to 5G C-Band interference. They must follow the updated landing distance calculations and approach procedures when NOTAMs indicate 5G interference. Compliance with this directive is effective immediately as of February 14, 2022, and comments on the rule were accepted until March 31, 2022.
Summary
FAA Airworthiness Directive 2022-04-05 is a final rule affecting all Boeing 757 and 767 airplanes. It addresses interference from 5G C-Band wireless broadband operations in the 3.7-3.98 GHz frequency band that can disrupt radio altimeter functions and related aircraft systems during critical flight phases. The directive requires updates to the airplane flight manual to include specific operating procedures to mitigate these risks.
What changed
This new airworthiness directive introduces mandatory revisions to the limitations and operating procedures sections of the Boeing 757 and 767 airplane flight manuals. It specifies procedures for landing distance calculations, instrument landing system approaches, non-precision approaches, speedbrake deployment, and go-around maneuvers when 5G C-Band interference is present as indicated by NOTAMs. It supplements previous directives by addressing additional system anomalies caused by 5G interference beyond those already prohibited.
Why it matters
This directive is critical for aviation professionals because 5G C-Band interference can cause erroneous or missing radio altimeter data, leading to increased pilot workload and potential safety risks during approach, landing, and go-around phases. Operators must understand and implement the new procedures to maintain safe flight operations and comply with FAA regulations. Maintenance and compliance teams need to ensure flight manuals are updated and crews are trained on the new limitations and procedures.
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New ADs and bulletins for Boeing 757 and 767, summarized like this page, every Monday.