Airworthiness Directive · Amendment 39-22731 · Landing gear
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes, certificated in any category, with serial numbers 5301 through 5665 inclusive, 5701 through 5990 inclusive, and 6050 and subsequent.
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This AD was prompted by a report indicating that a new filter plate connector for the nose wheel steering (NWS) system electronic control module (ECM) does not meet certain certification requirements. This AD requires replacing all affected ECMs. This AD also prohibits the installation of affected parts under certain conditions. The FAA is issuing this AD to address the unsafe condition on these products.
Within 24 months after the effective date of this AD: Inspect the serial number of the ECM, part number (P/N) 601-86100-27, in accordance with Section 2.B. Part A of the Accomplishment Instructions of the applicable service information listed in figure (1) to the introductory text of paragraph (g) of this AD to determine if the serial number of the ECM, P/N 601-86100-27, is listed in Table 1 of Section 1.A. of the applicable service information listed in figure (1) to the introductory text of paragraph (g) of this AD. A review of maintenance records is also acceptable if the serial number of the ECM can be conclusively determined from that review.
| Model | Serial Nos. | Applicable bombardier service bulletin |
|---|---|---|
| CL-600-2B16 | 6050 and subsequent | 650-32-006, dated October 18, 2021. |
| CL-600-2B16 | 5701 through 5990 | 605-32-009, dated October 18, 2021. |
| CL-600-2B16 | 5301 through 5665 | 604-32-032, dated October 18, 2021. |
(1) If the serial number of the ECM is listed in Table 1 of Section 1.A. of the applicable service information or is not reidentified on the nameplate as SB-1, then the actions of paragraph (h) of this AD are required.
(2) If the serial number of the ECM is not listed in Table 1 of Section 1.A. of the applicable service information or is reidentified on the nameplate as SB-1, then the actions of paragraph (h) of this AD are not required.
For airplanes identified in paragraph (g)(1) of this AD: Do the actions specified in paragraphs (h)(1) and (2) of this AD.
(1) Within 24 months after the effective date of this AD: Replace the ECM, P/N 601-86100-27, identified in paragraph (g)(1) of this AD, in accordance with Section 2.C. Part B of the Accomplishment Instructions of the applicable service information listed in figure 1 to the introductory text of paragraph (g) of this AD.
(2) Prior to return to service, complete the operational test of the NWS system in accordance with Section 2.D. of the Accomplishment Instructions of the applicable service information listed in figure 1 to the introductory text of paragraph (g) of this AD.
As of the effective date of this AD, it is prohibited to install ECM, P/N 601-86100-27, as a replacement part, if the serial number is listed in Table 1 of Section 1.A. of the applicable service information listed in figure 1 to the introductory text of paragraph (g) of this AD, unless the ECM has been reidentified with SB-1 on the name plate.
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 responsible Flight Standards Office, as appropriate. If sending information directly to the manager, International Validation Branch, mail it to the address identified in paragraph (k)(2) of this AD or email to: 9-avs-nyaco-cos@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 Bombardier, Inc.'s 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-2023-14R1, dated May 15, 2023, for related information. This Transport Canada AD may be found in the AD docket at regulations.gov under Docket No. FAA-2023-2402.
(2) For more information about this AD, contact Steven Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-228-7300; email: 9-avs-nyaco-cos@faa.gov.
