Malaysia Airlines Flight 370 unofficial disappearance theories Malaysia Airlines Flight 370 unofficial disappearance theories Malaysia Airlines Flight 370 disappeared on 8 March 2014, after departing from Kuala Lumpur for Beijing, with 227 passengers and 12 crew members on board. Malaysia's former Prime Minister, Najib Razak, has stated that the aircraft's flight ended somewhere in the Indian Ocean, but no further explanation has been given. Official announcements have been questioned by many critics, and several theories about the disappearance have been proposed. Some of these have been described as conspiracy theories. The incident remains under investigation. Victims' relatives have questioned the veracity of the Malaysian government's statements about
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