{"abstract":"We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC225 helicopters with certain epicyclic modules installed. This AD requires inspecting the epicyclic module for the presence of a through-hole upstream of the magnetic plug. This AD is prompted by a report of a missing through-hole between the integrated collector and the magnetic plug, which would prevent the flow of chips from the integrated collector to the magnetic plug. This could result in the chip-detector system failing to detect deterioration of the main rotor mast lift bearing (lift bearing). These actions are intended to detect a missing through-hole and prevent lift bearing failure and subsequent loss of control of the helicopter.","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/2012/10/23/2012-25894.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"77 FR 64706","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective November 7, 2012.","disposition_notes":null,"docket_ids":["Docket No. FAA-2012-1128","Directorate Identifier 2012-SW-064-AD","Amendment 39-17225","AD 2012-21-09"],"dockets":[],"document_number":"2012-25894","effective_on":"2012-11-07","end_page":64709,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2012/10/23/2012-25894.xml","html_url":"https://www.federalregister.gov/documents/2012/10/23/2012-25894/airworthiness-directives-eurocopter-france-helicopters","images":{"ER23OC12.001":{"large":"https://img.federalregister.gov/ER23OC12.001/ER23OC12.001_large.png","medium":"https://img.federalregister.gov/ER23OC12.001/ER23OC12.001_medium.png","original_size":"https://img.federalregister.gov/ER23OC12.001/ER23OC12.001_original_size.png"},"ER23OC12.000":{"large":"https://img.federalregister.gov/ER23OC12.000/ER23OC12.000_large.png","medium":"https://img.federalregister.gov/ER23OC12.000/ER23OC12.000_medium.png","original_size":"https://img.federalregister.gov/ER23OC12.000/ER23OC12.000_original_size.png"}},"images_metadata":{"ER23OC12.001":{"large":{"identifier":"ER23OC12.001","content_type":"image/png","size":45934,"width":485,"sha":"8abbc24ea07286adb712adc467dc79db","url":"https://img.federalregister.gov/ER23OC12.001/ER23OC12.001_large.png","height":628},"medium":{"identifier":"ER23OC12.001","content_type":"image/png","size":11481,"width":228,"sha":"c70a2c85220fb4e95debd4c564ff039c","url":"https://img.federalregister.gov/ER23OC12.001/ER23OC12.001_medium.png","height":295},"original_size":{"identifier":"ER23OC12.001","content_type":"image/png","size":340781,"width":1724,"sha":"5cb671d8e2ed566afdbeadba8a6b76d9","url":"https://img.federalregister.gov/ER23OC12.001/ER23OC12.001_original_size.png","height":2234}},"ER23OC12.000":{"large":{"identifier":"ER23OC12.000","content_type":"image/png","size":27300,"width":497,"sha":"841210094fb8cc88c855f467d917988b","url":"https://img.federalregister.gov/ER23OC12.000/ER23OC12.000_large.png","height":372},"medium":{"identifier":"ER23OC12.000","content_type":"image/png","size":7181,"width":234,"sha":"dab22bc3fc770cb866f1c6908d9f5064","url":"https://img.federalregister.gov/ER23OC12.000/ER23OC12.000_medium.png","height":175},"original_size":{"identifier":"ER23OC12.000","content_type":"image/png","size":179204,"width":1776,"sha":"92ac281e7c30e0d81f1c59eca4ec05c7","url":"https://img.federalregister.gov/ER23OC12.000/ER23OC12.000_original_size.png","height":1328}}},"json_url":"https://www.federalregister.gov/api/v1/documents/2012-25894?publication_date=2012-10-23","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2012-10-23/2012-25894/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":97,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2012-10-23/pdf/2012-25894.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2012-25894.pdf?1350910430","publication_date":"2012-10-23","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2012/10/23/2012-25894.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-2012-1128-0002"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives"},"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2012-1128","supporting_documents_count":1,"docket_id":"FAA-2012-1128","regulation_id_number":"2120-AA64","title":"2012-SW-064-AD Eurocopter France Model EC225 helicopters to inspect chip detection system.","checked_regulationsdotgov_at":"2012-11-18T05:02:10Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":64706,"subtype":null,"title":"Airworthiness Directives; Eurocopter France Helicopters","toc_doc":"Eurocopter France Helicopters","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":77}