Airworthiness Directive · Amendment 39-23023 · Landing gear
Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes
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).
The FAA is superseding Airworthiness Directive (AD) 2022-19- 09, which applied to all Airbus Canada Limited Partnership Model BD- 500-1A10 and BD-500-1A11 airplanes. AD 2022-19-09 required repetitive inspections of the left and right main landing gear (MLG) lower spindle pins to detect corrosion and applicable repair or replacement. This AD was prompted by reports of in-service findings of corrosion on the flange of the MLG lower spindle pin. This AD continues to require certain actions in AD 2022-19-09. This AD also requires changing the tracking of flight cycles for inspections from the usage of the MLG to the usage of MLG lower spindle assemblies and replacement of affected MLG lower spindle assemblies, removes airplanes from the applicability, and prohibits the installation of affected parts under certain conditions; as specified in a Transport Canada AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
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.
(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.”
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.
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: AMOC@faa.gov.
(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.
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: 9-avs-nyaco-cos@faa.gov.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
