Airworthiness directives › 2024-25-01
AD 2024-25-01 Airworthiness Directives; Embraer S.A. (Type Certificate Previously Held by Yaborã Indústria Aeronáutica S.A.; Embraer S.A.) Airplanes
Models named: ERJ 190-400. 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 190-400 airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, Agência Nacional de Aviação Civil (ANAC) AD 2023-05-02R1, effective June 17, 2024 (ANAC AD 2023-05-02R1).
Unsafe condition
This AD was prompted by a report of unexpected wear on the wing hinge bearing assembly of the aileron surfaces found during the functional test of the aileron control system backlash. The FAA is issuing this AD to address wear on the wing hinge bearing assembly of the aileron surfaces that could lead to excessive backlash. The unsafe condition, if not addressed, could result in a limit cycle oscillation phenomenon exposing the surrounding structure and systems to unacceptable vibration levels and reducing airplane controllability.
Affected ADs
This AD replaces AD 2023-23-09, Amendment 39-22611 (88 FR 89286, December 27, 2023) (AD 2023-23-09).
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