{"abstract":"The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, and AS350D helicopters. This AD was prompted by a report of a gap between the bolted assemblies under the attachment fittings of the main gearbox (MGB) suspension bars. This AD requires replacing any affected front and rear attachment fittings, screws, nuts and washers of the MGB suspension bars, and prohibits installing any affected parts unless they are new (never previously installed) parts. The FAA is issuing this AD to address the unsafe condition on these products.","action":"Final rule; request for comments.","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/2026/04/14/2026-07168.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 19073","comment_url":"http://www.regulations.gov/commenton/FAA-2026-3479-0001","comments_close_on":"2026-05-29","correction_of":null,"corrections":[],"dates":"This AD is effective April 29, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-3479","Project Identifier MCAI-2026-00085-R","Amendment 39-23308","AD 2026-07-12"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-3479-0003"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-3479-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-04-14","updated_at":"2026-04-14T10:02:10.141-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-3479-0001","allow_late_comments":false,"id":"FAA-2026-3479-0001","comment_end_date":"2026-05-30","regulations_dot_gov_open_for_comment":true}],"supporting_documents_count":2,"id":"FAA-2026-3479","title":"MCAI-2026-00085-R; Airbus Helicopters Model AS350 Helicopters; ATA 53 – Fuselage – Mounts and Attachment – Checks / Replacement"}],"document_number":"2026-07168","effective_on":"2026-04-29","end_page":19076,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/04/14/2026-07168.xml","html_url":"https://www.federalregister.gov/documents/2026/04/14/2026-07168/airworthiness-directives-airbus-helicopters","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-07168?publication_date=2026-04-14","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-04-14/2026-07168/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":98,"last_updated":"2026-04-17 02:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-04-14/pdf/2026-07168.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-07168.pdf?1776084314","publication_date":"2026-04-14","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/04/14/2026-07168.txt","regulation_id_number_info":{"2120-AA64":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&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-2026-3479-0003"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-3479-0002"}],"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-2026-3479","supporting_documents_count":2,"docket_id":"FAA-2026-3479","document_id":"FAA-2026-3479-0001","regulation_id_number":"2120-AA64","title":"MCAI-2026-00085-R; Airbus Helicopters Model AS350 Helicopters; ATA 53 – Fuselage – Mounts and Attachment – Checks / Replacement","checked_regulationsdotgov_at":"2026-04-15T11:55:04Z"},"regulations_dot_gov_url":"http://www.regulations.gov/commenton/FAA-2026-3479-0001","significant":false,"signing_date":null,"start_page":19073,"subtype":null,"title":"Airworthiness Directives; Airbus Helicopters","toc_doc":"Airbus Helicopters","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":91}