2024-17-06: Fuselage

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: 2024-17-06 BAE Systems (Operations) Limited: Amendment 39-22831; Docket No. FAA-2024-1478; Project Identifier MCAI-2023-01216-T. (a) Effective Date This airworthiness directive (AD) is effective November 4, 2024. (b) Affected ADs None. (c) Applicability This AD applies to all BAE Systems (Operations) Limited airplanes identified in paragraphs (c)(1) and (2) of this AD, certificated in any category. (1) Model BAe 146-100A, -200A, and -300A airplanes. (2) Model Avro 146-RJ70A, -RJ85A, and -RJ100A airplanes. (d) Subject Air Transport Association (ATA) of America Code 53, Fuselage. (e) Unsafe Condition This AD was prompted by a report of cracking on the radius of the rib 0 forward longeron at frame 26. The FAA is issuing this AD to address cracking of the radius of the rib 0 forward longeron at frame 26. The unsafe condition, if not addressed, could result in failure of the rib 0 forward longeron, which could lead to failure of an adjacent structure, leading to failure of the fuselage skin, and could result in rapid decompression and possible loss of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Inspection and Corrective Actions Within 4 months after the effective date of this AD, do a visual and a high frequency eddy current inspection for defects of the radius of the rib 0 forward longeron at frame 26, in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-249, dated August 25, 2023. If any cracking or defects are found, repair before further flight, in accordance with a method approved by the Manager, International Validation Branch, FAA; or the United Kingdom Civil Aviation Authority (UK CAA); or BAE Systems (Operations) Limited's UK CAA's Design Organization Approval (DOA). If the method is approved by the DOA, the approval must include the DOA-authorized signature. (h) Reporting Requirement Report positive inspection results at the applicable time specified in paragraph (h)(1) or (2) of this AD using the Inspection Report form in Appendix 1 of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-249, dated August 25, 2023. (1) If the inspection was done on or after the effective date of this AD: Submit the report within 30 days after the inspection. (2) If the inspection was done before the effective date of this AD: Submit the report within 30 days after the effective date of this AD. (i) 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 (j) of this AD. Information may be emailed to: AMOC@faa.gov. 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 the UK CAA; or BAE Systems (Operations) Limited's UK CAA's DOA. If approved by the DOA, the approval must include the DOA-authorized signature. (j) Additional Information For more information about this AD, contact Todd Thompson, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 206-231-3228; email todd.thompson@faa.gov. (k) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-249, dated August 25, 2023. (ii) [Reserved] (3) For BAE Systems material identified in this AD, contact BAE Systems (Operations) Limited, Customer Information Department, Prestwick International Airport, Ayrshire, KA9 2RW, Scotland, United Kingdom; telephone +44 1292 675207; fax +44 1292 675704; email RApublications@baesystems.com; website baesystems.com/en/our-company/our-businesses/regional-aircraft/about-us. (4) You may view this material 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 August 22, 2024. Victor Wicklund, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2024-22319 Filed 9-27-24; 8:45 am]BILLING CODE 4910-13-P