行方不明となっているMH370便は、クアラルンプール発を８日午前0時35分に出発し、同6時30分に北京に到着するスケジュールだった。飛行距離は約3700km。午前2時40分にマレーシアのスバン管制センター（Subang Air Traffic）と交信を断ち、その後捜索中とのこと。搭載燃料は7.5時間分というから、マレーシア時間午前8時（日本時間午前9時）までに不時着などが確認されなければ、墜落が確定ということになる。
Search intensifies for Malaysian airliner and 239 people, rescue ships head to sea
By Tom Watkins and Chelsea J. Carter, CNN
March 8, 2014 -- Updated 0519 GMT (1319 HKT) (CNN) -- (CNN) -- Malaysia Airlines flight carrying 239 people from Kuala Lumpur to Beijing disappeared Saturday after air traffic controllers lost contact with the plane, the airline said.
"At the moment we have no idea where this aircraft is right now," Malaysia Airlines Vice President of Operations Control Fuad Sharuji said on CNN's "AC360."
Subang Air Traffic Control lost contact with Flight MH370 at about 2:40 a.m. local time (1:40 p.m. ET Friday), Sharuji said.
Quest: Odd to lose contact while cruising Plane loses contact with airline
"We tried to call this aircraft through various means," he said. The airline checked reports that the jet had landed in several places, but determined that none of the reports was true, he said.
The Boeing 777-200 departed Kuala Lumpur International Airport at 12:41 a.m. and was expected to land in Beijing at 6:30 a.m., a 2,300-mile (3,700 kilometer) trip. It was carrying 227 passengers, two of them infants, and 12 crew members, the airline said.
At the time of its disappearance, the plane was carrying about 7.5 hours of fuel, Sharuji said.
The passengers are of 13 nationalities, the airline said. They were from China and Taiwan (154), Malaysia (38), Indonesia (12), Australia (7), France (3), United States (4), New Zealand (2), Ukraine (2), Canada (2), Russia (1), Italy (1), Netherlands (1), Austria (1).
One infant from the United States and another from China were included in the tally.
By CNN's math, that adds up to 228 passengers, one more than the total cited by the airline. There was no immediate explanation offered.
"Malaysia Airlines is currently working with the authorities who have activated their Search and Rescue team to locate the aircraft," the statement said. The public can call +603 7884 1234 for further information.
"We deeply regret that we have lost all contacts" with the jet, said CEO Ahmad Juahari Yahya in a statement.
Efforts to contact the plane in the hours after it disappeared were fruitless. China deployed two rescue ships in the South China Sea to begin a search, state-run broadcaster CCTV said.
Family and friends of those missing on the flight gathered at a hotel complex in the Lido district of Beijing. People were being led in through a throng of reporters, with those friends and relatives saying nothing to the media.
One woman had her hand to her face. As the door opened, a man inside looked anxious as he talked on a cell phone.
The airline's website said the flight was piloted by Cap. Zaharie Ahmad Shah, 53, a Malaysian. He has 18,365 total flying hours and joined Malaysia Airlines in 1981, the website said. The first officer is Fariq Ab.Hamid, 27, a Malaysian with a total of 2,763 flying hours. He joined Malaysia Airlines in 2007.
The airline said in a statement that its representatives were contacting the relatives of those aboard. "Focus of the airline is to work with the emergency responders and authorities and mobilize its full support," it said.
China's state-run Xinhua News Agency said the flight lost contact and its radar signal as it was flying over the Ho Chi Minh air traffic control area in Vietnam.
China's embassy in Malaysia formed an emergency team headed by the Chinese ambassador to deal with the incident, it said.
"We're closely monitoring reports on Malaysia flight MH370," Boeing said in a tweet. "Our thoughts are with everyone on board."
"It doesn't sound very good," retired American Airlines Capt. Jim Tilmon told CNN's "AC360." He noted that the route is mostly overland, which means that there would be plenty of antennae, radar and radios to contact the plane.
"I've been trying to come up with every scenario that I could just to explain this away, but I haven't been very successful."
He said the plane is "about as sophisticated as any commercial airplane could possibly be," with an excellent safety record.
"The lack of communications suggests to me that something most unfortunate has happened," said Mary Schiavo, former inspector general of the U.S. Department of Transportation, in an interview with CNN International. "But that, of course, does not mean that there are not many persons that need to be rescued and secured. There's still a very urgent need to find that plane and to render aid."
There is one recent blemish for the Boeing jet: An Asiana Airlines Boeing 777 carrying 291 passengers struck a seawall at San Francisco International Airport in July 2013, killing three people and wounding dozens more.
Malaysia Airlines operates in Southeast Asia, East Asia, South Asia, the Middle East and on the route between Europe and Australasia.
It has 15 of the Boeing 777-200 planes in its fleet, CNN's Richard Quest reported.
Part of the company is in the private sector, but the government owns most of it.
Malayan Airways Limited began flying in 1937 as an air service between Penang and Singapore. A decade later, it began flying commercially as the national airline.
In 1963, when Malaysia was formed, the airline was renamed Malaysian Airlines Limited.
Within 20 years, it had grown from a single aircraft operator into a company with 2,400 employees and a fleet operator.
Malaysia Airlines loses contact with plane carrying 239 people (Reuters) - A Malaysia Airlines flight carrying 227 passengers and 12 crew from Kuala Lumpur to Beijing lost contact with air traffic controllers early on Saturday, the airline said in a statement, the plane likely missing in Vietnamese airspace.
Flight MH370, operating a Boeing B777-200 aircraft left Kuala Lumpur at 12.21 a.m. (11.21 a.m. ET Friday) and had been expected to land in the Chinese capital at 6.30 a.m. (5.30 p.m. ET) the same day.
"We deeply regret that we have lost all contacts with flight MH370," Malaysia Airlines Chief Executive Ahmad Jauhari Yahya said in a statement.
"Malaysia Airlines is currently working with the authorities who have activated their search-and-rescue teams to locate the aircraft," it said.
An official at the Civil Aviation Authority of Vietnam (CAAV) said the plane had failed to check in as scheduled at 1721 GMT (12.21 p.m. ET) while it was flying over the sea between Malaysia and Ho Chi Minh city.
"Its code didn't appear in our system," Bui Van Vo, the CAAV's flight control department manager, told Reuters by telephone.
China's official Xinhua news agency also quoted the Civil Aviation Administration of China (CAAC) as saying the flight lost contact while flying through Vietnamese airspace.
The CAAC said 158 Chinese nationals were on board the plane. China's aviation regulators said they had not received any signals from the plane and that there had been no reports of any aircraft crashing in Chinese waters.
"We are extremely worried," Chinese Foreign Minister Wang Yi told reporters in Beijing. "We are doing all we can to get details. The news is very disturbing. We hope everyone on the plane is safe."
Chinese state TV also said there had not been any immediate reports of a plane crashing in Chinese waters.
If the plane is found to have crashed, the loss would mark the second fatal accident involving a Boeing 777 in less than a year, after an unblemished safety record since the jet entered service in 1995.
Last summer, an Asiana Airlines Boeing 777 crash-landed in San Francisco, killing three passengers.
Boeing said it was aware of reports that the Malaysia Airlines plane was missing and was monitoring the situation but had no further comment.
Malaysia Airlines said it was contacting the families of those on board flight MH370 and had set up support facilities for those affected.
"Focus of the airline is to work with the emergency responders and authorities and mobilize its full support," the airline statement said.
"Our thoughts and prayers are with all affected passengers and crew and their family members."
Distressed family members of those on board had also begun gathering at Beijing airport on Saturday.
Chang Ken Fei, a Malaysian waiting at Beijing airport for friends to arrive, said: "I got here at seven (a.m.). At first I thought the plane was just delayed as normal, so I came a bit later, I've just been waiting and waiting.
"I asked them what was going on but they just tell us 'we don't know'."
(Additional reporting by Ben Blanchard, Jonathan Standing and Natalie Thomas in BEIJING, Nguyen Phuong Linh in HANOI and Alwyn Scott in NEW YORK; Writing by Paul Tait; Editing by Mark Bendeich)