{"abstract":"We propose to adopt a new airworthiness directive (AD) for certain The Cessna Aircraft Company Model 750 airplanes. This proposed AD was prompted by reports of direct current (DC) generator overvoltage events. This proposed AD would require replacing the auxiliary power unit (APU) generator control unit (GCU). We are proposing this AD to prevent DC generator overvoltage events, which could result in subsequent smoke in the cockpit and loss of avionics and electrical systems.","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/2012/06/25/2012-15451.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"77 FR 37827","comment_url":null,"comments_close_on":"2012-08-09","correction_of":null,"corrections":[],"dates":"We must receive comments on this proposed AD by August 9, 2012.","disposition_notes":null,"docket_ids":["Docket No. FAA-2012-0644","Directorate Identifier 2012-NM-011-AD"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2012-0644-0004"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2012-0644-0002"}],"agency_name":null,"documents":[{"comment_count":0,"comment_start_date":"2012-06-25","updated_at":"2023-03-01T13:09:36.920-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2012-0644-0001","allow_late_comments":null,"id":"FAA-2012-0644-0001","comment_end_date":"2012-08-10","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"id":"FAA-2012-0644","title":"2012-NM-011-AD The Cessna Aircraft Company Model 750 airplanes"}],"document_number":"2012-15451","effective_on":null,"end_page":37829,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2012/06/25/2012-15451.xml","html_url":"https://www.federalregister.gov/documents/2012/06/25/2012-15451/airworthiness-directives-the-cessna-aircraft-company-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2012-15451?publication_date=2012-06-25","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2012-06-25/2012-15451/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":113,"last_updated":"2026-09-20 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2012-06-25/pdf/2012-15451.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2012-15451.pdf?1340369462","publication_date":"2012-06-25","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2012/06/25/2012-15451.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-2012-0644-0004"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2012-0644-0002"}],"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-2012-0644","supporting_documents_count":2,"docket_id":"FAA-2012-0644","document_id":"FAA-2012-0644-0001","regulation_id_number":"2120-AA64","title":"2012-NM-011-AD The Cessna Aircraft Company Model 750 airplanes","checked_regulationsdotgov_at":"2023-03-01T18:09:36Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":37827,"subtype":null,"title":"Airworthiness Directives; The Cessna Aircraft Company Airplanes","toc_doc":"The Cessna Aircraft Company Airplanes","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Proposed Rule","volume":77}