2021-07-14: Main landing gear

Adoption of the Amendment \n\n\n\tAccordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n0 1. The authority citation for part 39 continues to read as follows: \n\n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\n\n\nSec. 39.13 (Amended) \n\n0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive: \n\n2021-07-14 Yabora Industria Aeronautica S.A. (Type Certificate Previously Held by Embraer S.A.): Amendment 39- 21491; Docket No. FAA-2021-0253; Project Identifier MCAI-2021-00220- T. \n\n(a) Effective Date \n\n\n\tThis airworthiness directive (AD) becomes effective April 20, 2021. \n\n(b) Affected ADs \n\n\n\tNone. \n\n(c) Applicability \n\n\n\tThis AD applies to all Yabora Industria Aeronautica S.A. Model EMB-135BJ, -135ER, -135KE, -135KL, - 135LR, -145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes, certificated in any category. \n\n(d) SubjectAir Transport Association (ATA) of America Code 32, Main landing gear. \n\n(e) Reason \n\n\n\tThis AD was prompted by a report involving disconnection of a side arm strut from the right main landing gear (MLG); a subsequent investigation found that the side arm strut lower bearing was installed inverted on the airplane. The FAA is issuing this AD to address disconnection of the MLG side arm strut, which could prevent the MLG from being locked in the down position and \n\n((Page 17524)) \n\npossibly lead to loss of control of the airplane during take-off and landing. \n\n(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\n(g) Requirements \n\n\n\tExcept as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, Agencia Nacional de Aviacao Civil (ANAC) AD 2021-02-02, effective February 26, 2021; corrected February 26, 2021 (ANAC AD 2021-02-02). \n\n(h) Exceptions to ANAC AD 2021-02-02 \n\n\n\t(1) Where ANAC AD 2021-02-02 refers to its effective date, this AD requires using the effective date of this AD. \n\t(2) The ''Alternative method of compliance (AMOC)'' section of ANAC AD 2021-02-02 does not apply to this AD. \n\t(3) Paragraph (c) of ANAC AD 2021-02-02 specifies to report inspection results to ANAC and Yabora Industria Aeronautica S.A. within a certain compliance time. For this AD, report inspection results only if any discrepancies (i.e., positioning of the grease fittings is incorrect, installation of the bearings are inverted, bearings have migrated) are found at the applicable time specified in paragraph (h)(3)(i) or (ii) of this AD. \n\t(i) If the inspections were done on or after the effective date of this AD: Submit the report within 10 days after the inspection. \n\t(ii) If the inspections were done before the effective date of this AD: Submit the report within 10 days after the effective date of this AD. \n\t(4) Where figure 2 of ANAC AD 2021-02-02 specifies an ''arrow indication,'' this AD allows installation of all spherical bearings with arrows missing and/or with evidence of spherical bearing rotation (arrows misaligned with the MLG lower side arm center line), provided that the spherical bearings are original equipment manufacturer (OEM) units. \n\t(5) Where paragraph (a) of ANAC AD 2021-02-02 states to ''refer to'' certain airplane maintenance manual (AMM) and component maintenance manual (CMM) procedures for removal and installation of the MLG lower side arm and the MLG side arm bearings, this AD requires those AMM and CMM procedures. Therefore, those actions must be done in accordance with the applicable AMM and CMM procedures specified in ANAC AD 2021-02-02. \n\n(i) Other FAA AD Provisions \n\n\n\tThe following provisions also apply to this AD: \n\t(1) Alternative Methods of Compliance (AMOCs): The Manager, Large Aircraft Section, International Validation Branch, FAA, has the authority to approve AMOCs forthis AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the Large Aircraft Section, International Validation Branch, send it to the attention of the person identified in paragraph (j) of this AD. Information may be emailed to: 9-AVS-AIR-730-AMOC@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. \n\t(2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, Large Aircraft Section, International Validation Branch, FAA; or ANAC; or ANAC's authorized Designee. If approved by the ANAC Designee, the approval must include the Designee's authorized signature. \n\n(j) Related Information \n\n\n\tFor more information about this AD, contact Ho-Joon Lim, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax 206-231-3405; email ho-joon.lim@faa.gov. \n\n(k) Material Incorporated by Reference \n\n\n\t(1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. \n\t(2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise. \n\t(i) Agencia Nacional de Aviacao Civil (ANAC) AD 2021-02-02, effective February 26, 2021; corrected February 26, 2021. \n\t(ii) (Reserved) \n\t(3) For ANAC AD 2021-02-02, contact the National Civil Aviation Agency (ANAC), Aeronautical Products Certification Branch (GGCP), Rua Dr. Orlando Feirabend Filho, 230--Centro Empresarial Aquarius-- Torre B--Andares 14 a 18, Parque Residencial Aquarius, CEP 12.246- 190--Sao Jose dos Campos--SP, BRAZIL, Tel: 55 (12) 3203-6600; Email: pac@anac.gov.br; internet www.anac.gov.br/en/. You may find this IBR material on the ANAC website at https://sistemas.anac.gov.br/certificacao/DA/DAE.asp. You may find this IBR material on the ANAC website at https://sistemas.anac.gov.br/certificacao/DA/DAE.asp. \n\t(4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. This material may be found in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-0253. \n\t(5) You may view this material that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. \n\n\n\tIssued on March 25, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2021-07010 Filed 4-1-21; 11:15 am) BILLING CODE 4910-13-P