{"abstract":"This notice announces the availability of draft Technical Standard Order (TSO), C77b. This proposed TSO pertains to minimum performance standards that gas turbine auxiliary power units (APUs), commonly used in commercial aircraft, must meet in order to be identified with the proposed TSO marking.","action":"Notice of availability of proposed Technical Standard Order and request for public comment.","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/2000/02/04/00-2564.html","cfr_references":[],"citation":"65 FR 5720","comment_url":null,"comments_close_on":"2000-05-04","correction_of":null,"corrections":[],"dates":"Comments must identify the TSO file number and be received on or before May 4, 2000.","disposition_notes":null,"docket_ids":[],"dockets":[],"document_number":"00-2564","effective_on":null,"end_page":5720,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2000/02/04/00-2564.xml","html_url":"https://www.federalregister.gov/documents/2000/02/04/00-2564/tso-c77b-gas-turbine-auxiliary-power-units","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/00-2564?publication_date=2000-02-04","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2000-02-04/00-2564/mods.xml","not_received_for_publication":null,"page_length":1,"page_views":{"count":2392,"last_updated":"2026-04-04 16:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2000-02-04/pdf/00-2564.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2000-02-04","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2000/02/04/00-2564.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":5720,"subtype":null,"title":"TSO-C77b, Gas Turbine Auxiliary Power Units","toc_doc":null,"toc_subject":null,"topics":[],"type":"Notice","volume":65}