2023-24-03: Fire Protection

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: 2023-24-03 MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.): Amendment 39-22619; Docket No. FAA-2023-1496; Project Identifier MCAI-2022-01059-T. (a) Effective Date This airworthiness directive (AD) is effective January 22, 2024. (b) Affected ADs None. (c) Applicability This AD applies to all MHI RJ Aviation ULC (Type Certificate previously held by Bombardier, Inc.) airplanes identified in paragraphs (c)(1) through (6) of this AD, certificated in any category. (1) Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. (2) Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes. (3) Model CL-600-2C11 (Regional Jet Series 550) airplanes. (4) Model CL-600-2D15 (Regional Jet Series 705) airplanes. (5) Model CL-600-2D24 (Regional Jet Series 900) airplanes. (6) Model CL-600-2E25 (Regional Jet Series 1000) airplanes. (d) Subject Air Transport Association (ATA) of America Code 26, Fire Protection. (e) Reason This AD was prompted by a determination that new or more restrictive aircraft maintenance manual (AMM) tasks and certification maintenance requirement (CMR) tasks are necessary. The FAA is issuing this AD to address a potential dormant failure of the lavatory smoke detector if the self-test switch check is not performed in accordance with the revised AMM or CMR tasks. If these maintenance task changes are not implemented, and in combination with a fire in the lavatory, this may lead to a delay in the reaction time to address smoke/fire in the lavatory. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Maintenance or Inspection Program Revision for Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes For Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes: Within 60 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in Bombardier Temporary Revision 2A-75, dated May 28, 2020. The initial compliance time is within 12 months after the effective date of this AD. (h) Maintenance or Inspection Program Revision for Other Airplanes For airplanes identified in paragraphs (c)(2) through (6) of this AD: Within 60 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in Figure 1 to paragraph (h) of this AD. The initial compliance time for doing the tasks is within 12 months after the effective date of this AD. Figure 1 to Paragraph (h)- AMM task for an operational check of the lavatory smoke detector (forward and aft) ER18DE23.016 (i) No Alternative Actions or Intervals After the existing maintenance or inspection program has been revised as required by paragraph (g) or (h) of this AD, no alternative actions ( e.g., inspections) or intervals may be used unless the actions, and intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (j)(1) of this AD. (j) Other FAA 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 certification office, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, International Validation Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300. 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'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-2022-42, dated August 8, 2022, for related information. This Transport Canada AD may be found in the AD docket at regulations.gov under Docket No. FAA-2023-1496. (2) For more information about this AD, contact Elizabeth Dowling, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; email 9-avs-nyaco-cos@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) 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 to do the actions required by this AD, unless this AD specifies otherwise. (i) Bombardier Temporary Revision 2A-75, dated May 28, 2020. (ii) [Reserved] (3) For service information identified in this AD, 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. (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 fr.inspection@nara.gov. Issued on November 29, 2023. Victor Wicklund, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2023-27680 Filed 12-15-23; 8:45 am]BILLING CODE 4910-13-P