Malaysia Airlines Flight 370

=== Communication lost ===
{{external media
| video1 = [https://www.youtube.com/watch?v=q13aTqdMAFw ATC conversations with Flight 370] Audio recordings of conversations between ATC and Flight 370 from pre-departure to final contact (00:25–01:19).
}}
The aircraft's final transmission was an automated position report, sent using the [[Aircraft Communications Addressing and Reporting System]] (ACARS) protocol at 01:06&nbsp;MYT.<ref name=ATSB />{{Rp|2}}<ref name="Press Con"/><ref name="Ground log">{{cite web |title=Signalling Unit Log for (9M-MRO) Flight MH370 |archive-url=https://web.archive.org/web/20160304040818/http://www.dca.gov.my/mainpage/MH370%20Data%20Communication%20Logs.pdf |archive-date=4 March 2016 |url-status=dead |url=http://www.dca.gov.my/mainpage/MH370%20Data%20Communication%20Logs.pdf |publisher=Inmarsat/Malaysia Department of Civil Aviation |access-date=29 June 2014}}</ref>{{RP|36}} Among the data provided in this message was the total fuel remaining: {{convert|43800|kg|lb|abbr=on}}.<ref name="ATSB Flight path update">{{cite web|title=MH370 – Flight Path Analysis Update|url=http://www.atsb.gov.au/media/5163181/AE-2014-054_MH370%20-FlightPathAnalysisUpdate.pdf|website=Australian Transport Safety Bureau|access-date=15 November 2014|date=8 October 2014|publisher=[[Australian Transport Safety Bureau]]|archive-date=18 September 2019|archive-url=https://web.archive.org/web/20190918020649/https://www.atsb.gov.au/media/5163181/AE-2014-054_MH370%20-FlightPathAnalysisUpdate.pdf|url-status=dead}}</ref>{{Rp|9}} The last verbal signal to air traffic control occurred at 01:19:30, when Captain Zaharie acknowledged a transition from Lumpur Radar to [[Ho Chi Minh City|Ho Chi Minh]] [[Area Control Centre|ACC]]:{{efn|name=Singapore FIR|Responsibility for air traffic control is partitioned geographically, by international agreements, into [[flight information region]]s (FIRs). Although the airspace at the point where Flight 370 was lost is part of the Singapore FIR, the Kuala Lumpur ACC had been delegated responsibility to provide air traffic control services to aircraft in that part of its FIR.<ref name=FIR-Malaysia />{{Rp|13}}}}<ref name="Interim report-March 2015" />{{Rp|2, 21}}<ref name="Preliminary report" /><ref name="Guardian Transcript"/>

{{blockquote|Lumpur Radar: "Malaysian three seven zero, contact Ho Chi Minh one two zero decimal nine. Good night."<br />
Flight 370: "Good night. Malaysian three seven zero."}}

The crew was expected to signal ATC in Ho Chi Minh City as the aircraft passed into Vietnamese airspace, just north of the point where contact was lost.<ref name="AutoVQ-3"/><ref name="AutoVQ-4"/> The captain of another aircraft attempted to contact the crew of Flight 370 shortly after 01:30, using the [[Aircraft emergency frequency|international air distress<!-- (IAD) --> frequency]], to relay Vietnamese air traffic control's request for the crew to contact them; the captain said he was able to establish communication, but heard only "mumbling" and static.<ref name="nst-pilot"/> Calls made to Flight 370's cockpit at 02:39 and 07:13 were unanswered, but acknowledged by the aircraft's [[satellite data unit]].<ref name=ATSB />{{Rp|18}}<ref name="Ground log" />{{Rp|40}}