{"abstract":"We are adopting a new airworthiness directive (AD) for certain The Cessna Aircraft Company Model 750 airplanes. This AD was prompted by reports of direct current (DC) generator overvoltage events. This AD requires replacing the auxiliary power unit (APU) generator control unit (GCU). We are issuing this AD to prevent DC generator overvoltage events, which could result in smoke in the cockpit and loss of avionics and electrical systems.","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/2012/09/19/2012-22337.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"77 FR 57994","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective October 24, 2012.","disposition_notes":null,"docket_ids":["Docket No. FAA-2012-0644","Directorate Identifier 2012-NM-011-AD","Amendment 39-17193","AD 2012-18-16"],"dockets":[],"document_number":"2012-22337","effective_on":"2012-10-24","end_page":57995,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2012/09/19/2012-22337.xml","html_url":"https://www.federalregister.gov/documents/2012/09/19/2012-22337/airworthiness-directives-the-cessna-aircraft-company-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2012-22337?publication_date=2012-09-19","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2012-09-19/2012-22337/mods.xml","not_received_for_publication":null,"page_length":2,"page_views":{"count":129,"last_updated":"2026-08-24 16:15:16 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2012-09-19/pdf/2012-22337.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2012-22337.pdf?1347974442","publication_date":"2012-09-19","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2012/09/19/2012-22337.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_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","regulation_id_number":"2120-AA64","title":"2012-NM-011-AD The Cessna Aircraft Company Model 750 airplanes","checked_regulationsdotgov_at":"2012-11-18T05:01:20Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":57994,"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":"Rule","volume":77}