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AD: Yaborã Industria Aeronáutica S.A.

AD 2021-25-02 ...Also Requires Application Of A Lower Torque Value...

The FAA is superseding Airworthiness Directive (AD) 2014-16-16, which applied to all Embraer S.A. Model ERJ 190-100 STD, -100 LR, -100 ECJ, -100 IGW, -200 STD, -200 LR, and -200 IGW airplanes; and AD 2018-19-28, which applied to certain Embraer S.A. Model ERJ 190-100 STD, -100 LR, -100 ECJ, -100 IGW, -200 STD, -200 LR, and -200 IGW airplanes.

AD 2014-16-16 required, for certain airplanes, retorquing and replacing the pylon lower link fittings, and for all airplanes, repetitive retorquing of those fittings. AD 2018-19-28 required modification of the attaching parts of the pylon lower link fittings. This AD continues to require those actions, and also requires application of a lower torque value, inspection of certain shear pins and replacement if necessary, and revised compliance times for the modification; as specified in an Agência Nacional de Aviação Civil (ANAC) AD, which is incorporated by reference. This AD also prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective January 20, 2022.

Supplementary Information: ANAC, which is the aviation authority for Brazil, has issued ANAC AD 2020-06-02R02, effective November 30, 2020 (ANAC AD 2020-06-02R02) (also referred to as the MCAI), to correct an unsafe condition for certain Yaborã Industria Aeronáutica S.A. Model ERJ 190-100 STD, -100 LR, -100 ECJ, -100 IGW, -200 STD, -200 LR, and -200 IGW airplanes. Model 190-100 SR airplanes are not certificated by the FAA and are not included on the U.S. type certificate data sheet; this AD therefore does not include those airplanes in the applicability.

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2014-16-16, Amendment 39-17940 (79 FR 48018, August 15, 2014) (AD 2014-16-16); and AD 2018-19-28, Amendment 39-19429 (83 FR 48935, September 28, 2018) (AD 2018-19-28). AD 2014-16-16 applied to all Embraer S.A. Model ERJ 190-100 STD, -100 LR, -100 ECJ, -100 IGW, -200 STD, -200 LR, and -200 IGW airplanes. AD 2018-19-28 applied to certain Embraer S.A. Model ERJ 190-100 STD, -100 LR, -100 ECJ, -100 IGW, -200 STD, -200 LR, and -200 IGW airplanes. The NPRM published in the Federal Register on August 24, 2021 (86 FR 47252). The NPRM was prompted by reports of bushing migration, loss of nut torque on the engine pylon lower inboard and outboard link fittings, a loose lower link assembly, and damaged nuts. The existing torque values could cause damage to the nuts, which could lead to loss of the shear pins of the pylon outboard and inboard lower link fittings. In addition, the existing compliance time for the modification of the pylon lower link fitting attaching parts has been found to be inadequate to address the unsafe condition. The NPRM proposed to continue to require the requirements of ADs 2014-16-16 and 2018-19-28, as specified in ANAC AD 2020-06-02R02. The NPRM also proposed to require application of a lower torque value, inspection of certain shear pins and replacement if necessary, and revised compliance times for the modification, as specified in ANAC AD 2020-06-02R02. The NPRM also proposed to prohibit the installation of affected parts. The FAA is issuing this AD to address loss of integrity of the engine pylon lower link fittings, which could lead to separation of the engine from the wing. See the MCAI for additional background information.

FMI: www.regulations.gov

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