{"abstract":"The FAA proposes to adopt a new airworthiness directive (AD) for Pilatus Aircraft Ltd. (Pilatus) Models PC-12/45, PC-12/47, and PC- 12/47E airplanes with Supplemental Type Certificate (STC) SA00634DE installed. This proposed AD was prompted by a report of strake attachment brackets and the fuselage frame failing at the upper most bracket attachment location. This proposed AD would require inspecting the strake, attachment brackets, surrounding structure, and bolts and replacing components and repairing damage if necessary. 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/2021/07/22/2021-15469.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"86 FR 38613","comment_url":null,"comments_close_on":"2021-09-07","correction_of":null,"corrections":[],"dates":"The FAA must receive comments on this proposed AD by September 7, 2021.","disposition_notes":null,"docket_ids":["Docket No. FAA-2021-0573","Project Identifier 2018-CE-046-AD"],"dockets":[{"supporting_documents":[{"title":"Supporting AD Document","document_id":"FAA-2021-0573-0003"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2021-07-22","updated_at":"2023-02-28T17:29:02.258-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2021-0573-0001","allow_late_comments":null,"id":"FAA-2021-0573-0001","comment_end_date":"2021-09-08","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2021-0573","title":"2018-CE-046-AD; Pilatus PC-12 with Spectre Lift Platform Installed; Strake and Spigot Beam"}],"document_number":"2021-15469","effective_on":null,"end_page":38615,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2021/07/22/2021-15469.xml","html_url":"https://www.federalregister.gov/documents/2021/07/22/2021-15469/airworthiness-directives-pilatus-aircraft-ltd-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2021-15469?publication_date=2021-07-22","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2021-07-22/2021-15469/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":463,"last_updated":"2026-08-24 04:15:06 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2021-07-22/pdf/2021-15469.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2021-15469.pdf?1626871523","publication_date":"2021-07-22","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2021/07/22/2021-15469.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":"Supporting AD Document","document_id":"FAA-2021-0573-0003"}],"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-2021-0573","supporting_documents_count":1,"docket_id":"FAA-2021-0573","document_id":"FAA-2021-0573-0001","regulation_id_number":"2120-AA64","title":"2018-CE-046-AD; Pilatus PC-12 with Spectre Lift Platform Installed; Strake and Spigot Beam","checked_regulationsdotgov_at":"2023-02-28T22:29:01Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":38613,"subtype":null,"title":"Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes","toc_doc":"Pilatus Aircraft Ltd. Airplanes","toc_subject":"Airworthiness Directives:\n","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Proposed Rule","volume":86}