2025-09-02: Landing Gear

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by: a. Removing Airworthiness Directive (AD) 2022-19-09, Amendment 39-22178 (87 FR 57799, September 22, 2022); and b. Adding the following new AD: 2025-09-02 Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.): Amendment 39-23023; Docket No. FAA-2024-2326; Project Identifier MCAI-2023-01048-T. (a) Effective Date This airworthiness directive (AD) is effective June 18, 2025. (b) Affected ADs This AD replaces AD 2022-19-09, Amendment 39-22178 (87 FR 57799, September 22, 2022) (AD 2022-19-09). (c) Applicability This AD applies to Airbus Canada Limited Partnership (type certificate previously held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Model BD-500-1A10 and BD-500-1A11 airplanes, certificated in any category, as identified in Transport Canada AD CF-2023-66, dated October 3, 2023 (Transport Canada AD CF-2023-66). (d) Subject Air Transport Association (ATA) of America Code 32, Landing Gear. (e) Unsafe Condition This AD was prompted by reports of in-service findings of corrosion on the flange of the main landing gear (MLG) lower spindle pin. The FAA is issuing this AD to address corrosion and subsequent cracking of the MLG lower spindle pin. The unsafe condition, if not addressed, could result in failure of the pin, and consequent collapse of the MLG. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requirements Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, Transport Canada AD CF-2023-66. (h) Exceptions To Transport Canada AD CF-2023-66 (1) Where Transport Canada AD CF-2023-66 refers to May 20, 2021, the effective date of Transport Canada AD CF-2021-18, this AD requires using October 27, 2022 (the effective date of AD 2022-19-09). (2) Where Transport Canada AD CF-2023-66 refers to its effective date, this AD requires using the effective date of this AD. (3) Where Part I of Transport Canada AD CF-2023-66 specifies "Initial inspections carried out," this AD requires replacing that text with "Initial inspections and applicable repairs and replacements carried out." (4) Where Part II of Transport Canada AD CF-2023-66 specifies "at intervals not to exceed 3000 FC or 24 months," this AD requires replacing that text with "at intervals not to exceed 3000 FC or 24 months on the lower spindle assembly." (5) Where Part II of Transport Canada AD CF-2023-66 specifies "Repetitive inspections carried out," this AD requires replacing that text with "Repetitive inspections and applicable repairs and replacements carried out." (6) Where Part III of Transport Canada AD CF-2023-66 specifies a compliance time for the terminating action, for this AD, the compliance time is within the time specified in Part III of Transport Canada AD CF-2023-66, or within 60 days after the effective date of this AD, whichever occurs later. (7) Where Part III of Transport Canada AD CF-2023-66 specifies part number (P/N) "415A0500-02," this AD requires replacing that text with P/N "4115A0500-02." (i) No Reporting or Return of Parts Requirement Although the material referenced in Transport Canada AD CF-2023-66 specifies to submit certain information and send removed parts to the manufacturer, this AD does not include that requirement. (j) Additional AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, AIR-520, Continued Operational Safety Branch, FAA, has the authority to approve AMOCs for this 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 manager of AIR-520, Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: [email protected]. (i) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (ii) AMOCs approved previously for AD 2022-19-09 are approved as AMOCs for the corresponding provisions of Transport Canada AD CF-2023-66 that are required by paragraph (g) of this AD. (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, AIR-520, Continued Operational Safety Branch, FAA; or Transport Canada; or Airbus Canada Limited Partnership's Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (3) Required for Compliance (RC): Except as required by paragraph (j)(2) of this AD, if any material contains procedures or tests that are identified as RC, those procedures and tests must be done to comply with this AD; any procedures or tests that are not identified as RC are recommended. Those procedures and tests that are not identified as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the procedures and tests identified as RC can be done and the airplane can be put back in an airworthy condition. Any substitutions or changes to procedures or tests identified as RC require approval of an AMOC. (k) Additional Information For more information about this AD, contact Fatin Saumik, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-228-7300; email: [email protected]. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) Transport Canada AD CF-2023-66, dated October 3, 2023. (ii) [Reserved] (3) For Transport Canada material identified in this AD, contact Transport Canada, Transport Canada National Aircraft Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888-663-3639; email [email protected]; website at tc.canada.ca/en/aviation. (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. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations, or email [email protected]. Issued on April 22, 2025. Peter A. White, Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2025-08338 Filed 5-13-25; 8:45 am]BILLING CODE 4910-13-P