Ground communications with the Boeing 777 flying from Beijing to Kuala Lumpur on
March 8 was severed just under an hour .
Earlier , a U.S. official said investigators may have been an act of piracy , it '' adding, '' in the
disappearance of the aircraft are investigating the possibility of
human intervention '' told The Associated Press . ''
Other theories are still being investigated , while U.S. officials suggest significant evidence of human intervention out of touch with the Boeing 777 aircraft transponder system before a
message is closed about a dozen minutes .
Such a distinction would be unlikely in the case of a catastrophe in flight .
Only a skilled aviator plane Malaysians on the South China Sea since the last confirmed location was referred to navigate the way . Officials dropped after the civil military radar radar had picked up the missing plane that degree of certainty '' with a '' more than 50 percent was established .
Why would anyone do this is unclear . Malaysian officials and other people's immediate background of two pilots and 10 crew members , 227 passengers on board will be investigated as well .
Some experts a flight from Singapore to Jakarta in 1997 and one in 1999, EGYPTAIR Silk Air crash during a flight as a pilot was suspected suicide , the most likely explanation for the disappearance could have said that .
A massive international effort to find the plane's transponder stopped transmitting initially began in the South China Sea . Then on the other side of the Malay Peninsula to the Andaman Sea and the Indian Ocean has expanded .
