{"abstract":"We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900) airplanes, and CL-600-2E25 (Regional Jet Series 1000) airplanes. This proposed AD was prompted by a determination that wear and possible leakage of the high-pressure seal in the cylinder of the No. 3 hydraulic system reservoir could occur and prevent the system from reaching normal operating pressure. This proposed AD would require repetitive operational checks for wear and leakage of the high-pressure seal in the cylinder of the reservoir of the No. 3 hydraulic system, and corrective actions if necessary. We are proposing this AD to detect and correct a malfunctioning temperature indication of the No. 3 hydraulic system. High hydraulic fluid temperature combined with a temperature transducer malfunction could result in un-annunciated overheating of the hydraulic system and consequent ignition sources inside the fuel tank, which, combined with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.","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/2016/07/01/2016-15289.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"81 FR 43122","comment_url":null,"comments_close_on":"2016-08-15","correction_of":null,"corrections":[],"dates":"We must receive comments on this proposed AD by August 15, 2016.","disposition_notes":null,"docket_ids":["Docket No. FAA-2016-7421","Directorate Identifier 2015-NM-145-AD"],"dockets":[{"supporting_documents":[{"title":"Additional Information","document_id":"FAA-2016-7421-0005"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2016-7421-0004"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2016-7421-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2016-07-01","updated_at":"2023-03-01T02:35:19.427-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2016-7421-0001","allow_late_comments":null,"id":"FAA-2016-7421-0001","comment_end_date":"2016-08-16","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":3,"id":"FAA-2016-7421","title":"2015-NM-145-AD\nBombardier, Inc. Model CL‑600‑2C10 (Regional Jet Series 700, 701, & 702), CL‑600‑2D15 (Regional Jet Series 705), CL‑600‑2D24 (Regional Jet Series 900) airplanes, and CL‑600‑2E25 (Regional Jet Series 1000) airplanes"}],"document_number":"2016-15289","effective_on":null,"end_page":43124,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2016/07/01/2016-15289.xml","html_url":"https://www.federalregister.gov/documents/2016/07/01/2016-15289/airworthiness-directives-bombardier-inc-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2016-15289?publication_date=2016-07-01","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2016-07-01/2016-15289/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":201,"last_updated":"2026-04-24 06:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2016-07-01/pdf/2016-15289.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2016-15289.pdf?1467290735","publication_date":"2016-07-01","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2016/07/01/2016-15289.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":"Additional Information","document_id":"FAA-2016-7421-0005"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2016-7421-0004"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2016-7421-0002"}],"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-2016-7421","supporting_documents_count":3,"docket_id":"FAA-2016-7421","document_id":"FAA-2016-7421-0001","regulation_id_number":"2120-AA64","title":"2015-NM-145-AD\nBombardier, Inc. Model CL‑600‑2C10 (Regional Jet Series 700, 701, & 702), CL‑600‑2D15 (Regional Jet Series 705), CL‑600‑2D24 (Regional Jet Series 900) airplanes, and CL‑600‑2E25 (Regional Jet Series 1000) airplanes","checked_regulationsdotgov_at":"2023-03-01T07:35:18Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":43122,"subtype":null,"title":"Airworthiness Directives; Bombardier, Inc. Airplanes","toc_doc":"Bombardier, Inc. Airplanes","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Proposed Rule","volume":81}