Joint Agency Coordination Centre of contact for information about the search for media and families of Flight 370 passengers. On 8 March 2014, Malaysia Airlines Flight 370 disappeared en route from Kuala Lumpur, Malaysia to Beijing, China with 239 persons aboard; a search in the South China Sea and Gulf of Thailand was promptly initiated near the aircraft's last voice contact with air traffic control and final contact with secondary radar (the type of radar used by air traffic control). A week after the disappearance, Malaysia announced that military radar determined that the aircraft had traveled west across the Malay Peninsula after being lost
Timeline of Malaysia Airlines Flight 370 soon discounted and a search of a remote region of the southern Indian Ocean, led by Australia, began on 18 March. On 24 March, Malaysia Airlines and Najib announced that the flight had ended in the Southern Indian Ocean without survivors. In early April, an intense effort—the "acoustic search"— was made to detect the acoustic signals generated by underwater locator beacons (ULBs, also known as "pingers") attached to the flight recorders on Flight 370. After immersion in water, the ULBs emit an acoustic signal (also called a "ping") at a specific frequency once per second and have a battery life