{"abstract":"We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron, Inc. (Bell), Model 412 and 412EP helicopters. This AD requires establishing a lower life limit on certain swashplate outer ring assemblies (outer ring), revising the retirement life on the components' history card or equivalent record, and revising the maintenance manual or Instructions for Continued Airworthiness (ICA). This AD also prohibits installing these outer rings on any helicopter. This AD was prompted by reports of cracking in the outer rings. The actions are intended to prevent failure of an outer ring because of cracking, which could lead to the loss of main rotor (M/R) blade pitch control and subsequent loss of helicopter control.","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/2013/03/22/2013-05875.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"78 FR 17593","comment_url":"https://www.regulations.gov/commenton/FAA-2012-1016-0004","comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective April 26, 2013.","disposition_notes":null,"docket_ids":["Docket No. FAA-2012-1016","Directorate Identifier 2010-SW-009-AD","Amendment 39-17386","AD 2013-05-14"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2012-1016-0005"},{"title":"U.S. DOT/FAA - Disposition of Comments","document_id":"FAA-2012-1016-0003"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2012-1016-0002"}],"agency_name":null,"documents":[{"comment_count":0,"comment_start_date":"2013-03-22","updated_at":"2024-11-08T17:16:11.930-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2012-1016-0004","allow_late_comments":true,"id":"FAA-2012-1016-0004","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":3,"id":"FAA-2012-1016","title":"2010-SW-009-AD Bell Helicopter Textron, Inc., Model 412 and 412EP helicopters to reduce the retirement life of the swashplate outer ring assemblies."}],"document_number":"2013-05875","effective_on":"2013-04-26","end_page":17594,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2013/03/22/2013-05875.xml","html_url":"https://www.federalregister.gov/documents/2013/03/22/2013-05875/airworthiness-directives-bell-helicopter-textron-inc","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2013-05875?publication_date=2013-03-22","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2013-03-22/2013-05875/mods.xml","not_received_for_publication":null,"page_length":2,"page_views":{"count":69,"last_updated":"2026-08-26 06:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2013-03-22/pdf/2013-05875.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2013-05875.pdf?1363870421","publication_date":"2013-03-22","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2013/03/22/2013-05875.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 - See Attachments","document_id":"FAA-2012-1016-0005"},{"title":"U.S. DOT/FAA - Disposition of Comments","document_id":"FAA-2012-1016-0003"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2012-1016-0002"}],"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-2012-1016","supporting_documents_count":3,"docket_id":"FAA-2012-1016","document_id":"FAA-2012-1016-0004","regulation_id_number":"2120-AA64","title":"2010-SW-009-AD Bell Helicopter Textron, Inc., Model 412 and 412EP helicopters to reduce the retirement life of the swashplate outer ring assemblies.","checked_regulationsdotgov_at":"2024-11-08T22:12:02Z"},"regulations_dot_gov_url":"https://www.regulations.gov/commenton/FAA-2012-1016-0004","significant":false,"signing_date":null,"start_page":17593,"subtype":null,"title":"Airworthiness Directives; Bell Helicopter Textron, Inc.","toc_doc":"Bell Helicopter Textron, Inc.","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":78}