{"abstract":"We propose to adopt a new airworthiness directive (AD) for Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS) units installed on various aircraft. This proposed AD would require removing certain LCR-100 AHRS units from service. This proposed AD is prompted by test results showing loss of or invalid data. The proposed actions are intended to prevent an unsafe condition on these products.","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/2017/06/05/2017-11132.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"82 FR 25742","comment_url":null,"comments_close_on":"2017-08-04","correction_of":null,"corrections":[],"dates":"We must receive comments on this proposed AD by August 4, 2017.","disposition_notes":null,"docket_ids":["Docket No. FAA-2017-0522","Directorate Identifier 2015-SW-068-AD"],"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":1,"comment_start_date":"2017-06-05","updated_at":"2023-02-28T19:08:56.021-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2017-0522-0001","allow_late_comments":null,"id":"FAA-2017-0522-0001","comment_end_date":"2017-08-05","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":"2017-11132","effective_on":null,"end_page":25744,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2017/06/05/2017-11132.xml","html_url":"https://www.federalregister.gov/documents/2017/06/05/2017-11132/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/2017-11132?publication_date=2017-06-05","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2017-06-05/2017-11132/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":931,"last_updated":"2026-06-14 20:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2017-06-05/pdf/2017-11132.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2017-11132.pdf?1496407521","publication_date":"2017-06-05","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2017/06/05/2017-11132.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":1,"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-2017-0522-0001","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":"2023-03-01T00:08:55Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":25742,"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":"Proposed Rule","volume":82}