{"abstract":"This action establishes four low altitude Area Navigation (RNAV) T-routes, designated T-257, T-259, T-261 and T-263, in the Sacramento and San Francisco, CA, terminal areas. T-routes are low altitude Air Traffic Service (ATS) routes, based on RNAV, for use by aircraft having instrument flight rules (IFR)-approved Global Positioning System (GPS)/Global Navigation Satellite System (GNSS) equipment. The FAA is taking this action to enhance safety and improve the efficient use of the navigable airspace in the Sacramento and San Francisco, CA, terminal areas.","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/2008/05/30/E8-11964.html","cfr_references":[{"chapter":null,"citation_url":null,"part":71,"title":14}],"citation":"73 FR 31021","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective Date: 0901 UTC, July 31, 2008. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments.","disposition_notes":null,"docket_ids":["Docket No. FAA-2008-0037","Airspace Docket No. 07-AWP-6"],"dockets":[],"document_number":"E8-11964","effective_on":"2008-07-31","end_page":31023,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2008/05/30/E8-11964.xml","html_url":"https://www.federalregister.gov/documents/2008/05/30/E8-11964/establishment-of-low-altitude-area-navigation-routes-t-routes-sacramento-and-san-francisco-ca","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E8-11964?publication_date=2008-05-30","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2008-05-30/E8-11964/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":2863,"last_updated":"2026-04-04 14:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2008-05-30/pdf/E8-11964.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2008-05-30","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2008/05/30/E8-11964.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-11-14T05:35:24Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":31021,"subtype":null,"title":"Establishment of Low Altitude Area Navigation Routes (T-Routes); Sacramento and San Francisco, CA","toc_doc":"Establishment of Low Altitude Area Navigation Routes (T-Routes): Sacramento and San Francisco, CA","toc_subject":null,"topics":["Airspace","Incorporation by reference","Navigation (air)"],"type":"Rule","volume":73}