2024-01-09: 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 adding the following new airworthiness directive: 2024-01-09 Bombardier, Inc.: Amendment 39-22660; Docket No. FAA-2023-2145; Project Identifier MCAI-2023-00358-T. (a) Effective Date This airworthiness directive (AD) is effective March 21, 2024. (b) Affected ADs None. (c) Applicability This AD applies to all Bombardier, Inc., Model BD-100-1A10 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 32, Landing gear. (e) Unsafe Condition This AD was prompted by a report of a steering control unit (SCU) filter plate connector that does not meet the certification requirements for exposure of electronic components to high intensity radiated field environments. The FAA is issuing this AD to prevent malfunction of the nose wheel steering (NWS) system. The unsafe condition, if not addressed, could result in un-commanded steering or lateral runway excursion. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Inspection or Records Review Within 24 months after the effective date of this AD: Inspect the SCU to determine if SCU part number (P/N) 46000-01 with a serial number listed in Figure 1 to paragraph (g) of this AD is installed on the airplane. A review of the airplane maintenance records is acceptable in lieu of the inspection if the SCU P/N and serial number can be conclusively determined from that review. If an SCU P/N 46000-01 with a serial number listed in Figure 1 to paragraph (g) of this AD is not installed on the airplane, or if the SCU identification plate is marked with SB100-32-030, then no further action is required by this AD; however, the installation prohibition in paragraph (i) of this AD still applies. Figure 1 to Paragraph (g)-Affected SCU Serial Numbers ER15FE24.018 (h) Replacement For airplanes with SCU P/N 46000-01 with a serial number listed in Figure 1 to paragraph (g) of this AD installed and not marked on the SCU identification plate with SB100-32-030: Within 24 months after the effective date of this AD, replace the SCU and rig and test the NWS control, in accordance with the instructions in paragraph (h)(1), (2), or (3) of this AD, as applicable. (1) For airplane serial numbers 20001 through 20500 inclusive: Steps 2.C.(1) and 2.C.(3) of Section 2.C., "Part B-Modification," and Section 2.D., "Testing," of the Accomplishment Instructions in Bombardier Service Bulletin 100-32-34, dated October 18, 2021. (2) For airplane serial numbers 20501 through 20893 inclusive: Steps 2.C.(1) and 2.C.(3) of Section 2.C., "Part B-Modification," and Section 2.D., "Testing," of the Accomplishment Instructions in Bombardier Service Bulletin 350-32-010, dated October 18, 2021. (3) For airplane serial numbers 20894 and larger: 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. (i) Parts Installation Prohibition As of the effective date of this AD, do not install SCU P/N 46000-01 on any airplane if the serial number of the SCU is listed in figure 1 to paragraph (g) of this AD, unless the SCU identification plate has been marked with SB100-32-030. (j) Additional AD Provisions 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 of the International Validation Branch, mail it to the address identified in paragraph (k)(2) of this AD. Information may be emailed to: [email protected] . 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. (k) Additional Information (1) Refer to Transport Canada AD CF-2023-13, dated February 24, 2023, for related information. This Transport Canada AD may be found in the AD docket at regulations.gov under Docket No. FAA-2023-2145. (2) For more information about this AD, contact William Reisenauer, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7301; email [email protected] . (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) Bombardier Service Bulletin 100-32-34, dated October 18, 2021. (ii) Bombardier Service Bulletin 350-32-010, dated October 18, 2021. (3) For service information identified in this AD, contact Bombardier Business Aircraft Customer Response Center, 400 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; telephone 514-855-2999; email [email protected] ; website bombardier.com . (4) You may view this service information 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 January 9, 2024. Caitlin Locke, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2024-03047 Filed 2-14-24; 8:45 am]BILLING CODE 4910-13-P