{"abstract":"The FAA is adopting a new airworthiness directive (AD) for all BAE Systems (Operations) Limited Model Avro 146-RJ series airplanes. This AD requires an inspection of the Thales Avionics distance bearing indicator (DBI) to determine part number (P/N) and serial number (S/N), and replacement of the affected DBI with a new or modified DBI. This AD is prompted by a report of defective electrical insulators in DBIs. We are issuing this AD to prevent a short circuit in the DBI due to defective electrical insulation, which could potentially cause a loss of primary navigation instruments (such as airspeed indicator, altimeter, and global positioning system (GPS) information).","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/2005/04/25/05-8096.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"70 FR 21137","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective May 31, 2005.","disposition_notes":null,"docket_ids":["Docket No. FAA-2005-20078","Directorate Identifier 2004-NM-210-AD","Amendment 39-14068","AD 2005-08-16"],"dockets":[],"document_number":"05-8096","effective_on":"2005-05-31","end_page":21139,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2005/04/25/05-8096.xml","html_url":"https://www.federalregister.gov/documents/2005/04/25/05-8096/airworthiness-directives-bae-systems-operations-limited-model-avro-146-rj-series-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/05-8096?publication_date=2005-04-25","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2005-04-25/05-8096/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":20,"last_updated":"2026-04-04 16:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2005-04-25/pdf/05-8096.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2005-04-25","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2005/04/25/05-8096.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":{"checked_regulationsdotgov_at":"2011-11-12T15:55:34Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":21137,"subtype":null,"title":"Airworthiness Directives; BAE Systems (Operations) Limited Model Avro 146-RJ Series Airplanes","toc_doc":"BAE Systems (Operations) Ltd.","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":70}