Airworthiness Directive · Amendment 39-22568 · Landing gear
MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier Inc.) Airplanes
This AD applies to all MHI RJ Aviation ULC (type certificate previously held by Bombardier Inc.) Model CL-600-2E25 (Regional Jet Series 1000) airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all MHI RJ Aviation ULC Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by a determination that a new airworthiness limitation is necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to establish a new life limit for a certain main landing gear (MLG) retract actuator piston rod. The FAA is issuing this AD to address the unsafe condition on these products.
Within 60 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to establish a life limit of 9,300 flight cycles for the MLG retract actuator piston rod (part of MLG retract actuator 55600), part number 55615-1. The initial compliance time for removing the part from service is at the applicable time specified in paragraphs (g)(1) through (3) of this AD.
Note 1 to paragraph (g): The life limit in paragraph (g) of this AD can be found in Airworthiness Limitation (ALI) Task Number 32-32-05-709 for Configuration B, “Piston Rod, MLG Retract Actuator (part of MLG Retract Actuator 55600)” of MHI RJ CRJ700/900/1000 Temporary Revision ALI-0763, dated April 14, 2022 (TR ALI-0763), which specifies an effective date of April 14, 2022.
(1) For a MLG retract actuator piston rod that has accumulated fewer than 4,300 total flight cycles as of April 14, 2022 (phase-in Effective Date of TR ALI-0763): Before accumulating 9,300 total flight cycles.
(2) For a MLG retract actuator piston rod that has accumulated 4,300 total flight cycles or more and 18,000 total flight cycles or fewer as of April 14, 2022 (phase-in Effective Date of TR ALI-0763): Within 5,000 flight cycles from April 14, 2022, or before exceeding 20,000 total flight cycles, whichever occurs first.
(3) For a MLG retract actuator piston rod that has accumulated more than 18,000 total flight cycles as of April 14, 2022 (phase-in Effective Date of TR ALI-0763): Within 2,000 flight cycles from April 14, 2022.
After the existing maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions (e.g., inspections) or intervals may be used unless they are approved as an alternative method of compliance in accordance with paragraph (i)(1) of this AD.
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, International Validation 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 local Flight Standards District Office, as appropriate. If sending information directly to the manager of the International Validation Branch, mail it to the address identified in paragraph (j)(3) of this AD or email to: 9-AVS-AIR-730-AMOC@faa.gov. If mailing information, also submit information by email. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office.
(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, International Validation Branch, FAA; or Transport Canada; or MHI RJ Aviation ULC Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature.
(1) Refer to Transport Canada AD CF-2022-56, dated September 26, 2022, for related information. This Transport Canada AD may be found in the AD docket at regulations.gov under Docket No. FAA-2023-1992.
(2) For more information about this AD, contact Gabriel D. Kim, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7343; email 9-avs-nyaco-cos@faa.gov.
(3) For MHI RJ service information identified in this AD that is not incorporated by reference, contact MHI RJ Aviation Group, Customer Response Center, 3655 Ave. des Grandes-Tourelles, Suite 110, Boisbriand, Québec J7H 0E2 Canada; North America toll-free telephone 833-990-7272 or direct-dial telephone 450-990-7272; fax 514-855-8501; email thd.crj@mhirj.com; website mhirj.com.
