Airworthiness directives › 2023-15-04
AD 2023-15-04 Airworthiness Directives; Embraer S.A. (Type Certificate Previously Held by Yaborã Indústria Aeronáutica S.A.; Embraer S.A.) Airplanes
Models named: ERJ 190-300, -400. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Embraer S.A. (Type Certificate previously held by Yaborã Indústria Aeronáutica S.A.; Embraer S.A.) Model ERJ 190-300 and -400 airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, Agência Nacional de Aviação Civil (ANAC) AD 2023-01-01, effective January 18, 2023 (ANAC AD 2023-01-01).
Unsafe condition
This AD was prompted by identification that, during simulations, analysis, and an in-service event of the airplane, a stall warning system activation ( i.e., stick shaker) and angle of attack (AOA) limiter engagement may occur in certain vertical gust conditions with specific intensity and frequency. The FAA is issuing this AD to address certain vertical gust conditions, which in combination with certain weight, speed, and aerodynamic configurations, could cause a nose up movement of the airplane after the stick shaker activation. The unsafe condition, if not addressed, could induce an unexpected airplane response affecting its controllability.
Affected ADs
None.
Read the original on the Federal Register →
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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