{"abstract":"We propose to adopt a new airworthiness directive (AD) for Bell Model 206L-4 and 407 helicopters. This proposed AD would require replacing or reworking certain aft bearing caps. This proposed AD is prompted by the manufacture of certain freewheel aft bearing caps without a lubrication channel to allow oil flow into the aft bearing support assembly. The proposed actions are intended to prevent failure of the freewheel unit and subsequent loss of control of the helicopter.","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/2013/06/20/2013-14693.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"78 FR 37158","comment_url":null,"comments_close_on":"2013-08-19","correction_of":null,"corrections":[],"dates":"We must receive comments on this proposed AD by August 19, 2013.","disposition_notes":null,"docket_ids":["Docket No. FAA-2013-0526","Directorate Identifier 2008-SW-14-AD"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2013-0526-0002"}],"agency_name":null,"documents":[{"comment_count":0,"comment_start_date":"2013-06-20","updated_at":"2023-03-01T13:10:55.812-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2013-0526-0001","allow_late_comments":null,"id":"FAA-2013-0526-0001","comment_end_date":"2013-08-20","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2013-0526","title":"2008-SW-14-AD Bell Helicopter Textron Canada Model 206L-4 and 407 helicopters, to require replacing or reworking certain freewheel aft bearing caps."}],"document_number":"2013-14693","effective_on":null,"end_page":37160,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2013/06/20/2013-14693.xml","html_url":"https://www.federalregister.gov/documents/2013/06/20/2013-14693/airworthiness-directives-bell-helicopter-textron-canada-bell-model-helicopters","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2013-14693?publication_date=2013-06-20","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2013-06-20/2013-14693/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":105,"last_updated":"2026-08-25 20:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2013-06-20/pdf/2013-14693.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2013-14693.pdf?1371646405","publication_date":"2013-06-20","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2013/06/20/2013-14693.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-2013-0526-0002"}],"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-2013-0526","supporting_documents_count":1,"docket_id":"FAA-2013-0526","document_id":"FAA-2013-0526-0001","regulation_id_number":"2120-AA64","title":"2008-SW-14-AD Bell Helicopter Textron Canada Model 206L-4 and 407 helicopters, to require replacing or reworking certain freewheel aft bearing caps.","checked_regulationsdotgov_at":"2023-03-01T18:10:54Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":37158,"subtype":null,"title":"Airworthiness Directives; Bell Helicopter Textron Canada (Bell) Model Helicopters","toc_doc":"Bell Helicopter Textron Canada (Bell) Model Helicopters","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Proposed Rule","volume":78}