{"abstract":"We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes; and Model 767-200, -300, -300F, and -400ER series airplanes. This AD was prompted by reports indicating that the counterweights in some hub assemblies of the ram air turbine (RAT) could be understrength and fracture when the RAT is rotating, and that some RAT hub assemblies were delivered with balance washer retention screws that were incorrectly heat-treated, and therefore, susceptible to fracture and cracking. This AD requires a part number and serial number inspection to determine if certain RAT hub assemblies are installed; and, for affected RAT hub assemblies, doing an inspection for missing and fractured balance washer screws, and replacement or rework if necessary. We are issuing this AD to prevent an inoperative RAT, which, following a dual engine shutdown in flight, will cause loss of all hydraulic power to the primary flight controls, resulting in subsequent loss of control of the airplane.","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/2015/03/16/2015-05035.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"80 FR 13486","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective April 20, 2015.","disposition_notes":null,"docket_ids":["Docket No. FAA-2008-0561","Directorate Identifier 2007-NM-223-AD","Amendment 39-18111","AD 2015-05-01"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Various Supplemental AD Documents","document_id":"FAA-2008-0561-0016"},{"title":"U.S. DOT/FAA - Various Supplemental AD Documents","document_id":"FAA-2008-0561-0009"},{"title":"U.S. DOT/FAA - Various Supplemental AD Documents","document_id":"FAA-2008-0561-0008"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2008-0561-0002"}],"agency_name":null,"documents":[{"comment_count":0,"comment_start_date":"2015-03-16","updated_at":"2023-03-01T13:17:44.548-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2008-0561-0015","allow_late_comments":null,"id":"FAA-2008-0561-0015","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":4,"id":"FAA-2008-0561","title":"2007-NM-223-AD Boeing Model 757-200 and -200 PF Series Airplanes; and Model 767-200 and -300 Series Airplanes "}],"document_number":"2015-05035","effective_on":"2015-04-20","end_page":13491,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2015/03/16/2015-05035.xml","html_url":"https://www.federalregister.gov/documents/2015/03/16/2015-05035/airworthiness-directives-the-boeing-company-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2015-05035?publication_date=2015-03-16","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2015-03-16/2015-05035/mods.xml","not_received_for_publication":null,"page_length":6,"page_views":{"count":204,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2015-03-16/pdf/2015-05035.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2015-05035.pdf?1426250715","publication_date":"2015-03-16","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2015/03/16/2015-05035.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 - Various Supplemental AD Documents","document_id":"FAA-2008-0561-0016"},{"title":"U.S. DOT/FAA - Various Supplemental AD Documents","document_id":"FAA-2008-0561-0009"},{"title":"U.S. DOT/FAA - Various Supplemental AD Documents","document_id":"FAA-2008-0561-0008"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2008-0561-0002"}],"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-2008-0561","supporting_documents_count":4,"docket_id":"FAA-2008-0561","document_id":"FAA-2008-0561-0015","regulation_id_number":"2120-AA64","title":"2007-NM-223-AD Boeing Model 757-200 and -200 PF Series Airplanes; and Model 767-200 and -300 Series Airplanes ","checked_regulationsdotgov_at":"2023-03-01T18:17:43Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":13486,"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":80}