{"abstract":"The FAA is superseding Airworthiness Directive (AD) 2021-09- 06, which applied to all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. AD 2021-09-06 required repetitive inspections for cracking of the left- and right-hand outboard chords of certain frame fittings and failsafe straps at a certain station around eight fasteners, and repair if any cracking is found. This AD was prompted by additional reports of cracking in the area and a subsequent determination that additional inspections are needed to address the unsafe condition. This AD requires repetitive detailed and ultrasonic inspections for cracking of the left- and right-hand sides of certain frame fittings and failsafe straps, and repair if any cracking is found. The FAA is issuing this AD to address the unsafe condition on these products.","action":"Final rule.","agencies":[{"raw_name":"DEPARTMENT OF TRANSPORTATION","name":"Transportation Department","id":492,"url":"https://www.federalregister.gov/agencies/transportation-department","json_url":"https://www.federalregister.gov/api/v1/agencies/492","parent_id":null,"slug":"transportation-department"},{"raw_name":"Federal Aviation Administration","name":"Federal Aviation Administration","id":159,"url":"https://www.federalregister.gov/agencies/federal-aviation-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/159","parent_id":492,"slug":"federal-aviation-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2025/04/08/2025-06005.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"90 FR 15111","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective May 13, 2025.","disposition_notes":null,"docket_ids":["Docket No. FAA-2024-0028","Project Identifier AD-2023-00919-T","Amendment 39-23004","AD 2025-07-03"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2024-0028-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2025-04-08","updated_at":"2025-04-08T09:01:26.932-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2024-0028-0012","allow_late_comments":false,"id":"FAA-2024-0028-0012","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2024-0028","title":"AD-2023-00919-T;  The Boeing Company Model 737-600, -700, -700C, ​‑800, -900, and -900ER series airplanes; frame fittings and failsafe straps."}],"document_number":"2025-06005","effective_on":"2025-05-13","end_page":15114,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2025/04/08/2025-06005.xml","html_url":"https://www.federalregister.gov/documents/2025/04/08/2025-06005/airworthiness-directives-the-boeing-company-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2025-06005?publication_date=2025-04-08","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2025-04-08/2025-06005/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":624,"last_updated":"2026-04-04 18:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2025-04-08/pdf/2025-06005.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2025-06005.pdf?1744029917","publication_date":"2025-04-08","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2025/04/08/2025-06005.txt","regulation_id_number_info":{"2120-AA64":{"issue":"202410","html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202410&RIN=2120-AA64&operation=OPERATION_EXPORT_XML","priority_category":"Routine and Frequent"}},"regulation_id_numbers":["2120-AA64"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2024-0028-0002"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives"},"comments_count":0,"agency_id":"FAA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2024-0028","supporting_documents_count":1,"docket_id":"FAA-2024-0028","document_id":"FAA-2024-0028-0012","regulation_id_number":"2120-AA64","title":"AD-2023-00919-T;  The Boeing Company Model 737-600, -700, -700C, ​‑800, -900, and -900ER series airplanes; frame fittings and failsafe straps.","checked_regulationsdotgov_at":"2025-04-09T11:55:04Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":15111,"subtype":null,"title":"Airworthiness Directives; The Boeing Company Airplanes","toc_doc":"The Boeing Company Airplanes","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":90}