Malaysia Airlines Flight 370 information about Flight 370; he opined that, based on known information, "MH370 never left Malaysian airspace." The watch supervisor at Kuala Lumpur ACC activated the Kuala Lumpur Aeronautical Rescue Coordination Centre (ARCC) at 05:30, more than four hours after communication was lost with Flight 370. The ARCC is a command post at an Area Control Centre that coordinates search-and-rescue activities when an aircraft is lost. Malaysia Airlines issued a media statement at 07:24 MYT, one hour after the scheduled arrival time of the flight at Beijing, stating that communication with the flight had been lost by Malaysian ATC at 02:40
Timeline of Malaysia Airlines Flight 370 expected to arrive at 6:30 local time (CST; UTC+08:00). At 1:19, while Flight 370 was over the South China Sea between Malaysia and Vietnam, Malaysian air traffic control (ATC) instructed Flight 370 to contact the next ATC in Vietnam. The final voice contact from Flight 370 was made when its captain replied, "Good night. Malaysian Three Seven Zero". Two minutes later, the aircraft's transponder stopped functioning, causing it to disappear from ATC's secondary radar. Malaysian military radar continued to track the aircraft as it turned left, crossed the Malay Peninsula near the Malaysia–Thailand border, and travelled over the Andaman Sea.