{"abstract":"The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B and EC155B1 helicopters. This proposed AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the airworthiness limitations section (ALS) of the existing maintenance manual (MM) or instructions for continued airworthiness and the existing approved maintenance or inspection program, as applicable. The FAA is proposing this AD to address the unsafe condition on these products.","action":"Notice of proposed rulemaking (NPRM).","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/2026/05/07/2026-09036.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 24757","comment_url":"http://www.regulations.gov/commenton/FAA-2026-3880-0001","comments_close_on":"2026-06-22","correction_of":null,"corrections":[],"dates":"The FAA must receive comments on this NPRM by June 22, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-3880","Project Identifier MCAI-2025-01428-R"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-3880-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-05-07","updated_at":"2026-05-07T10:05:15.325-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-3880-0001","allow_late_comments":false,"id":"FAA-2026-3880-0001","comment_end_date":"2026-06-23","regulations_dot_gov_open_for_comment":true}],"supporting_documents_count":1,"id":"FAA-2026-3880","title":"MCAI-2025-01428-R; Airbus Helicopters Model EC 155 Helicopters; Airworthiness Limitations Section Revision."}],"document_number":"2026-09036","effective_on":null,"end_page":24760,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/05/07/2026-09036.xml","html_url":"https://www.federalregister.gov/documents/2026/05/07/2026-09036/airworthiness-directives-airbus-helicopters","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-09036?publication_date=2026-05-07","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-05-07/2026-09036/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":104,"last_updated":"2026-05-31 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-05-07/pdf/2026-09036.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-09036.pdf?1778071522","publication_date":"2026-05-07","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/05/07/2026-09036.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-2026-3880-0002"}],"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-2026-3880","supporting_documents_count":1,"docket_id":"FAA-2026-3880","document_id":"FAA-2026-3880-0001","regulation_id_number":"2120-AA64","title":"MCAI-2025-01428-R; Airbus Helicopters Model EC 155 Helicopters; Airworthiness Limitations Section Revision.","checked_regulationsdotgov_at":"2026-05-08T11:55:07Z"},"regulations_dot_gov_url":"http://www.regulations.gov/commenton/FAA-2026-3880-0001","significant":false,"signing_date":null,"start_page":24757,"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":"Proposed Rule","volume":91}