Airworthiness directives › 2021-04-09
AD 2021-04-09 Airworthiness Directives; Yaborã Indústria Aeronáutica S.A. (Type Certificate Previously Held by Embraer S.A.) Airplanes
Models named: EMB-135BJ, -135ER, -135KE, -135KL, -135LR, EMB-145, -145EP, -145ER, -145LR, -145MP. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Yaborã Indústria Aeronáutica S.A. Model EMB-135BJ, -135ER, -135KE, -135KL, and -135LR airplanes; and Model EMB-145, -145EP, -145ER, -145LR, -145MP, -145MR, and -145XR airplanes; certificated in any category; as identified in Agência Nacional de Aviação Civil (ANAC) AD 2020-07-02, effective July 21, 2020 (ANAC AD 2020-07-02).
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, ANAC AD 2020-07-02.
Unsafe condition
This AD was prompted by reports that calculations provided by the automatic takeoff thrust control system (ATTCS) are incorrect under certain conditions. The FAA is issuing this AD to address the risk of over-prediction of the operational margins, without the necessary alert being provided to the flightcrew in some situations. This condition, if not corrected, could lead to a performance reduction during takeoff, in which case the airplane may not be able to take off safely.
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