Analysis of Malaysia Airlines Flight 370 satellite communications dynamics, such as possible and probable aircraft speeds, altitudes, and autopilot modes. Two statistical analyses were made and combined with calculations of Flight 370's maximum range to determine the most probable location of Flight 370 at the time of the 8:19 transmission, which is along the 8:19 BTO arc from approximately to . Malaysia Airlines Flight 370 departed Kuala Lumpur International Airport at 00:41 Malaysia Standard Time (MYT) on 8 March 2014 (16:41 UTC, 7 March), bound for Beijing Capital International Airport. At 1:19, Malaysian air traffic control (ATC) initiated a hand-off to Ho Chi Minh area ATC. The captain
Malaysia Airlines Flight 370 search of the sea-floor near the detections was carried out between 14 April and 28 May without any sign of Flight 370. In a March 2015 report, it was revealed that the calendar life of the battery for the ULB attached to Flight 370's flight data recorder had expired in December 2012 and may not have been as capable. In late June 2014, details of the next phase of the search were announced; officials have called this phase the "underwater search", despite the previous seafloor sonar survey. Continued refinement of the analysis of Flight 370's satellite communications identified a "wide