{"abstract":"The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 and 787-9 airplanes. This AD was prompted by a report of the lack of data to substantiate engine operability when an airplane is dispatched under a certain master minimum equipment list (MMEL) item. This AD prohibits dispatching an airplane under the operational procedures of the operator's minimum equipment list item corresponding to a certain MMEL item. The FAA is issuing this AD to address the unsafe condition on these products.","action":"Final rule; request for comments.","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/2026/09/29/2026-19956.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 61302","comment_url":"http://www.regulations.gov/commenton/FAA-2026-11785-0001","comments_close_on":"2026-11-13","correction_of":null,"corrections":[],"dates":"This AD is effective October 14, 2026. The FAA must receive comments on this AD by November 13, 2026","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-11785","Project Identifier AD-2026-00916-T","Amendment 39-23475","AD 2026-20-02"],"dockets":[{"supporting_documents":[],"agency_name":"FAA","documents":[{"comment_count":1,"comment_start_date":"2026-09-29","updated_at":"2026-10-08T01:56:35.965-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-11785-0001","allow_late_comments":false,"id":"FAA-2026-11785-0001","comment_end_date":"2026-11-14","regulations_dot_gov_open_for_comment":true}],"supporting_documents_count":0,"id":"FAA-2026-11785","title":"2026-NM-XXXX"}],"document_number":"2026-19956","effective_on":"2026-10-14","end_page":61304,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/09/29/2026-19956.xml","html_url":"https://www.federalregister.gov/documents/2026/09/29/2026-19956/airworthiness-directives-the-boeing-company-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-19956?publication_date=2026-09-29","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-09-29/2026-19956/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":222,"last_updated":"2026-10-08 18:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-09-29/pdf/2026-19956.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-19956.pdf?1790367309","publication_date":"2026-09-29","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/09/29/2026-19956.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":[],"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-2026-11785","supporting_documents_count":0,"docket_id":"FAA-2026-11785","document_id":"FAA-2026-11785-0001","regulation_id_number":"2120-AA64","title":"2026-NM-XXXX","checked_regulationsdotgov_at":"2026-10-08T22:55:03Z"},"regulations_dot_gov_url":"http://www.regulations.gov/commenton/FAA-2026-11785-0001","significant":false,"signing_date":null,"start_page":61302,"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":"Rule","volume":91}