{"abstract":"We are adopting a new airworthiness directive (AD) for Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS) units installed on various aircraft. This AD requires removing certain LCR-100 AHRS units from service. This AD was prompted by test results showing loss of or invalid data. The actions of this AD are intended to prevent an unsafe condition on these products.","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/2019/04/24/2019-08157.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"84 FR 17062","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective May 29, 2019.","disposition_notes":null,"docket_ids":["Docket No. FAA-2017-0522","Product Identifier 2015-SW-068-AD","Amendment 39-19621","AD 2019-07-10"],"dockets":[{"supporting_documents":[{"title":"Supporting AD Document","document_id":"FAA-2017-0522-0005"},{"title":"U.S. DOT/FAA - Supporting AD Documents","document_id":"FAA-2017-0522-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2019-04-24","updated_at":"2023-03-01T15:52:11.704-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2017-0522-0004","allow_late_comments":null,"id":"FAA-2017-0522-0004","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"id":"FAA-2017-0522","title":"Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS), to require removal of certain AHRS units from service. \n\n"}],"document_number":"2019-08157","effective_on":"2019-05-29","end_page":17064,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2019/04/24/2019-08157.xml","html_url":"https://www.federalregister.gov/documents/2019/04/24/2019-08157/airworthiness-directives-northrop-grumman-litef-gmbh-lcr-100-attitude-and-heading-reference-system","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2019-08157?publication_date=2019-04-24","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2019-04-24/2019-08157/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":1446,"last_updated":"2026-08-25 00:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2019-04-24/pdf/2019-08157.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2019-08157.pdf?1556023517","publication_date":"2019-04-24","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2019/04/24/2019-08157.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":"Supporting AD Document","document_id":"FAA-2017-0522-0005"},{"title":"U.S. DOT/FAA - Supporting AD Documents","document_id":"FAA-2017-0522-0002"}],"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-2017-0522","supporting_documents_count":2,"docket_id":"FAA-2017-0522","document_id":"FAA-2017-0522-0004","regulation_id_number":"2120-AA64","title":"Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS), to require removal of certain AHRS units from service. \n\n","checked_regulationsdotgov_at":"2023-03-01T20:52:10Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":17062,"subtype":null,"title":"Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units","toc_doc":"Northrop Grumman LITEF GmbH LCR100 Attitude and Heading Reference System Units","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":84}