2023-26-02: Pneumatic

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: 2023-26-02 Bombardier, Inc.: Amendment 39-22645; Docket No. FAA-2023-1890; Project Identifier MCAI-2023-00283-T. (a) Effective Date This airworthiness directive (AD) is effective February 27, 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: 36, Pneumatic. (e) Unsafe Condition This AD was prompted by reports from the supplier that some overheat detection sensing elements of the bleed air leak detection system were manufactured with insufficient salt fill. The FAA is issuing this AD to address non-conforming sensing elements of the bleed air leak detection system. The unsafe condition, if not addressed, could result in an inability to detect hot bleed air leaks and consequent damage to surrounding structures and systems, which could prevent continued safe flight and landing. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Definitions (1) For purposes of this AD, an affected part is a sensing element marked with a date code A0448 through A2104 inclusive and having an LTS/Kidde part number specified in Liebherr Service Bulletin CFD-F1958-26-01, dated May 6, 2022, unless that sensing element meets the criteria specified in either paragraph (g)(1)(i) or (ii) of this AD. (i) The sensing element has been tested as specified in Section 3 of the Accomplishment Instructions of Kidde Aerospace and Defense Service Bulletin CFD-26-1, Revision 6, dated February 28, 2022, or earlier revisions, and has been found to be serviceable; and the sensing element has been marked on one face of its connector hex nut and packaged as specified in Section 3.C. of the Accomplishment Instructions of Kidde Aerospace and Defense Service Bulletin CFD-26-1, Revision 6, dated February 28, 2022, or earlier revisions. (ii) The sensing element has been tested and found to be serviceable as specified in paragraph (i) of this AD; and the sensing element has been marked on one face of one connector hex nut with one green mark, as specified in Figure 11 of Bombardier Service Bulletin 100-36-10, dated December 23, 2022, or Bombardier Service Bulletin 350-36-003, dated December 23, 2022, as applicable (the figure is representative for all sensing elements). (2) For purposes of this AD, a serviceable part is a sensing element that is not an affected part. (h) Revision of the Existing Airplane Flight Manual (AFM) For airplane serial numbers 20001 through 20457 inclusive and 20501 through 20906 inclusive: Within 30 days after the effective date of this AD, revise the existing AFM to include the information specified in paragraphs (h)(1) and (2) of this AD, as applicable. (1) For airplane serial numbers 20001 through 20457 inclusive: Section 05-42, Air Conditioning & Pressurization, Non-Normal Procedures Section, Bombardier Challenger 300 AFM (Imperial Version), Publication No. CSP 100-1, Revision 71, dated November 9, 2022. Note 1 to Paragraph (h)(1): For obtaining the procedures for Bombardier Challenger 300 AFM (Imperial Version), Publication No. CSP 100-1, use Document Identification No. CH 300 AFM-I. (2) For airplane serial numbers 20501 through 20906 inclusive: Section 05-42, Airconditioning & Pressurization, Non-Normal Procedures Section, Bombardier Challenger 350 AFM, Publication No. CH 350 AFM, Revision 37, dated November 9, 2022. Note 2 to Paragraph (h)(2): For obtaining the procedures for Bombardier Challenger 350 AFM, Publication No. CH 350 AFM, use Document Identification No. CH 350 AFM. (i) Testing of Overheat Detection Sensing Elements For airplane serial numbers 20001 through 20457 inclusive and 20501 through 20906 inclusive: Within 7,500 flight cycles or 96 months, whichever occurs first, from the effective date of this AD, test the overheat detection sensing elements to determine if they are serviceable, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-36-10, dated December 23, 2022; or Bombardier Service Bulletin 350-36-003, dated December 23, 2022, as applicable. (1) For each sensing element that is serviceable, before further flight, mark the sensing element with a witness mark in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-36-10, dated December 23, 2022; or Bombardier Service Bulletin 350-36-003, dated December 23, 2022; as applicable. (2) For each sensing element that is not serviceable, before further flight, replace the sensing element with a serviceable part in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-36-10, dated December 23, 2022; or Bombardier Service Bulletin 350-36-003, dated December 23, 2022; as applicable. (j) Parts Installation Prohibition As of the effective date of this AD, no person may install an affected part on any airplane. (k) No Reporting Requirement Although Bombardier Service Bulletin 100-36-10, dated December 23, 2022; and Bombardier Service Bulletin 350-36-003, dated December 23, 2022; specify to submit certain information to the manufacturer, this AD does not include that requirement. (l) 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 (m)(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. (m) Additional Information (1) Refer to Transport Canada AD CF-2023-09, dated February 14, 2023, for related information. This Transport Canada AD may be found in the AD docket at regulations.gov under Docket No. FAA-2023-1890. (2) For more information about this AD, contact Steven Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; email [email protected]. (n) 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 as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) Bombardier Service Bulletin 100-36-10, dated December 23, 2022. (ii) Bombardier Service Bulletin 350-36-003, dated December 23, 2022. (iii) Section 05-42, Air Conditioning & Pressurization, Non-Normal Procedures Section, Bombardier Challenger 300 AFM (Imperial Version), Publication No. CSP 100-1, Revision 71, dated November 9, 2022. Note 3 to Paragraph (n)(2)(iii): For obtaining the procedures for Bombardier Challenger 300 AFM (Imperial Version), Publication No. CSP 100-1, use Document Identification No. CH 300 AFM-I. (iv) Section 05-42, Air Conditioning & Pressurization, Non-Normal Procedures Section, Bombardier Challenger 350 AFM, Publication No. CH 350 AFM, Revision 37, dated November 9, 2022. Note 4 to Paragraph (n)(2)(iv): For obtaining the procedures for Bombardier Challenger 350 AFM, Publication No. CH 350 AFM, use Document Identification No. CH 350 AFM. (v) Liebherr Service Bulletin CFD-F1958-26-01, dated May 6, 2022. (3) For Bombardier 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) For Liebherr-Aerospace Toulouse SAS service information identified in this AD, contact Liebherr-Aerospace Toulouse SAS, 408, Avenue des Etats-Unis-B.P.52010, 31016 Toulouse Cedex, France; telephone +33 (0)5.61.35.28.28; fax +33 (0)5.61.35.29.29; email [email protected]; website liebherr.aero. (5) You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th Street, Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. (6) 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 December 21, 2023. Caitlin Locke, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2024-01170 Filed 1-22-24; 8:45 am]BILLING CODE 4910-13-P