{"abstract":"The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace LP (GALP) Model Gulfstream G280 airplanes. This AD was prompted by reports of the accumulation of water in electrical connectors located in the aft fuselage directly below the empennage, resulting in empennage flight control related crew alerting system (CAS) messages. This AD requires retrofitting the flight controls empennage electrical harness. The FAA is issuing this AD to address the 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/2026/05/08/2026-09170.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 25096","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective June 12, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2025-5404","Project Identifier MCAI-2025-00424-T","Amendment 39-23325","AD 2026-09-04"],"dockets":[{"supporting_documents":[],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-05-08","updated_at":"2026-05-08T09:58:05.620-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2025-5404-0003","allow_late_comments":false,"id":"FAA-2025-5404-0003","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":0,"id":"FAA-2025-5404","title":"MCAI-2025-00424-T; Gulfstream Aerospace LP (GALP) Model Gulfstream G280 airplanes; Flight controls - empennage electrical harness retrofit"}],"document_number":"2026-09170","effective_on":"2026-06-12","end_page":25098,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/05/08/2026-09170.xml","html_url":"https://www.federalregister.gov/documents/2026/05/08/2026-09170/airworthiness-directives-gulfstream-aerospace-lp-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-09170?publication_date=2026-05-08","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-05-08/2026-09170/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":57,"last_updated":"2026-05-11 10:15:15 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-05-08/pdf/2026-09170.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-09170.pdf?1778157917","publication_date":"2026-05-08","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/05/08/2026-09170.txt","regulation_id_number_info":{"2120-AA64":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&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 - Supplemental AD Documents","document_id":"FAA-2025-5404-0002"}],"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-2025-5404","supporting_documents_count":1,"docket_id":"FAA-2025-5404","document_id":"FAA-2025-5404-0003","regulation_id_number":"2120-AA64","title":"MCAI-2025-00424-T; Gulfstream Aerospace LP (GALP) Model Gulfstream G280 airplanes; Flight controls - empennage electrical harness retrofit","checked_regulationsdotgov_at":"2026-05-09T11:55:08Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":25096,"subtype":null,"title":"Airworthiness Directives; Gulfstream Aerospace LP Airplanes","toc_doc":"Gulfstream Aerospace LP Airplanes","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":91}