{"abstract":"The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 777-200, -200LR, -300, and -300ER series airplanes. This proposed AD was prompted by a report of corrosion found on a satellite communications (SATCOM) high gain antenna adapter plate. This proposed AD would require repetitive inspections for corrosion of the SATCOM high gain antenna adapter plate and applicable on-condition actions. The FAA is proposing this AD to address the 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/2026/02/06/2026-02420.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"91 FR 5384","comment_url":null,"comments_close_on":"2026-03-23","correction_of":null,"corrections":[],"dates":"The FAA must receive comments on this proposed AD by March 23, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-0741","Project Identifier AD-2025-00817-T"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-0741-0002"}],"agency_name":"FAA","documents":[{"comment_count":6,"comment_start_date":"2026-02-06","updated_at":"2026-03-24T01:55:52.042-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-0741-0001","allow_late_comments":false,"id":"FAA-2026-0741-0001","comment_end_date":"2026-03-24","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2026-0741","title":"AD-2025-00817-T; The Boeing Company Model MCAI-2025-00628-T series airplanes;  Inspection of SATCOM antenna adapter plate"}],"document_number":"2026-02420","effective_on":null,"end_page":5386,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/02/06/2026-02420.xml","html_url":"https://www.federalregister.gov/documents/2026/02/06/2026-02420/airworthiness-directives-the-boeing-company-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-02420?publication_date=2026-02-06","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-02-06/2026-02420/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":209,"last_updated":"2026-05-06 10:15:17 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-02-06/pdf/2026-02420.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-02420.pdf?1770299123","publication_date":"2026-02-06","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/02/06/2026-02420.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-2026-0741-0002"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives"},"comments_count":6,"agency_id":"FAA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2026-0741","supporting_documents_count":1,"docket_id":"FAA-2026-0741","document_id":"FAA-2026-0741-0001","regulation_id_number":"2120-AA64","title":"AD-2025-00817-T; The Boeing Company Model MCAI-2025-00628-T series airplanes;  Inspection of SATCOM antenna adapter plate","checked_regulationsdotgov_at":"2026-03-25T08:55:08Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":5384,"subtype":null,"title":"Airworthiness Directives; The Boeing Company Airplanes","toc_doc":"The Boeing Company Airplanes","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Proposed Rule","volume":91}