Airworthiness directives › 2022-03-05
AD 2022-03-05 Airworthiness Directives; The Boeing Company Airplanes
Models named: 747-8F, 747-8 series, 777-200, -200LR, -300, -300ER, 777F series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company airplanes identified in paragraphs (c)(1) and (2) of this AD, certificated in any category. (1) Model 747-8F and 747-8 series airplanes. (2) Model 777-200, -200LR, -300, -300ER, and 777F series airplanes.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 2 days after the effective date of this AD: Revise the Limitations Section of the existing AFM to include the information specified in figure 1 to paragraph (g) of this AD. This may be done by inserting a copy of figure 1 to paragraph (g) of this AD into the existing AFM. ER27JA22.007 Note 1 to paragraph (g): Additional information about the unsafe condition identified in this AD can be found in Boeing Multi Operator Messages MOM-MOM-22-0024-01B(R2), dated January 18, 2022, and MOM-MOM-22-0039-01B(R1), dated January 18, 2022, for Boeing Model 777 airplanes and Model 747-8F and 747-8 series airplanes, respectively.
Unsafe condition
This AD was prompted by a 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), and a determination that this interference may affect other airplane systems using radio altimeter data, including the pitch control laws, including those that provide tail strike protection, regardless of the approach type or weather. The FAA is issuing this AD to address missing or erroneous radio altimeter data, which, in combination with multiple flight deck effects, could lead to loss of continued safe flight and landing.
Affected ADs
None.
Read the original on the Federal Register →
You just looked this one up by hand
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1