g**1
发帖数: 10330 | 1 Missing Flight Left Data Trail
Jetliner 'Pinged' Satellites With Location, Altitude for Hours After
Disappearance
Communication satellites received intermittent data "pings" from a missing
Malaysia Airlines 3786.KU -4.08% jet, giving the plane's location, speed
and altitude for at least five hours after it disappeared from civilian
radar screens, people briefed on the investigation said Thursday.
The final satellite ping was sent from over water, at what one of these
people called a "normal" cruising altitude. The people declined to say where
specifically the transmission originated, adding that it was unclear why
the transmissions stopped. One possibility one person cited was that the
system sending them had been disabled by someone on board.
The automatic pings, or attempts to link up with satellites operated by
Inmarsat ISAT.LN -1.32% PLC, occurred a number of times after Malaysia
Airlines Flight 370's last verified position, these people said, indicating
that at least through those hours, the Boeing Co. BA -2.04% 777 carrying
239 people remained intact and hadn't been destroyed in a crash, act of
sabotage or explosion.
Malaysian Airlines said it hadn't received any such data.
Chicago-based Boeing declined to comment Thursday.
If the plane remained airborne for that entire period it could have flown
more than 2,200 nautical miles from its last confirmed position over the
Gulf of Thailand, these people said.
On Thursday, meanwhile, the international search for the plane zeroed in on
areas far west of the plane's last known location.
Cmdr. William Marks, the spokesman for the U.S. Seventh Fleet, said the USS
Kidd would move through the Strait of Malacca, on Malaysia's west coast, and
stay at its northwest entrance, while surveillance planes would search an
area of the Indian Ocean 1,000 miles or more west of the strait.
Malaysia, which is overseeing the search effort, directed Indian forces to a
specific set of coordinate in the Andaman Sea, northwest of the Malay
peninsula, an Indian official said Thursday.
"There was no specified rationale behind looking in those areas, but a
detailed list was provided late Wednesday evening," the Indian official said.
U.S. aviation investigators said they were analyzing the satellite
transmissions to determine whether they can glean information about the
plane's location or status. The transmissions were sent via onboard
technology designed to send routine maintenance and system-monitoring data
back to the ground via satellite links, according to people familiar with
the matter.
A woman in Kuala Lumpur writes a message with others expressing prayers and
well-wishes for the missing jet. Agence France-Presse/Getty Images
Among the possible scenarios investigators said they are now considering is
whether the jet may have landed at any point during the five-hour period
under scrutiny, or whether it ultimately crashed.
The people said aviation investigators are exploring the possibility that
someone on the plane may have intentionally disabled two other automated
communication systems in an attempt to avoid detection. One system is the
transponders, which transmit to ground radar stations information on the
plane's identity, location and altitude, and another system that collects
and transmits data about several of the plane's key systems.
The widebody jet was scheduled to fly overnight to Beijing from Kuala Lumpur
in the predawn hours of March 8. Its transponders last communicated with
Malaysian civilian radar about an hour after takeoff.
After the plane dropped off civilian radar screens, these people said, the
satellite link operated in a kind of standby mode for several hours and
sought to establish contact with a satellite or satellites. These
transmissions didn't include data about any of the plane's critical systems,
they said, but the periodic contacts indicate to investigators that the
plane was still intact and believed to be flying at least a significant
portion of that time. The people said the transmissions included detailed
information about the plane's location, speed and bearing.
The transmissions, one person said, were comparable to the plane "saying I'm
here, I'm ready to send data."
Unknown so far to investigators is what happened to the plane following the
final satellite ping, these people said. Questions remain about the plane's
status, including what was happening in the cockpit.
Former FBI agent Chris Voss joins the News Hub to discuss U.S. investigators
' suspicions that Malaysia Airlines Flight 370 stayed in the air for four
hours after vanishing from civilian air-traffic control radar.
But the huge uncertainty about where the plane was headed, and why it
apparently continued flying so long without working transponders and other
communication links, has raised theories among investigators that the
aircraft may have been commandeered for reasons that remain unclear to U.S.
authorities.
At one briefing, according to this person, officials were told that
investigators are actively pursuing the notion that the plane was diverted "
with the intention of using it later for another purpose."
As authorities scramble to analyze and understand all of the transmissions
from the missing 777, the situation continues to change rapidly. Some people
briefed on the issue initially described the transmissions as information
that had been relayed from onboard monitoring systems embedded in the two
Rolls-Royce PLC Trent 800 engines, not the idling satellite communications
system.
—Trefor Moss, Gaurav Raghuvanshi, Josh Chin and Jeremy Page contributed to
this article..
http://online.wsj.com/news/articles/SB1000142405270230418510457 | s*y
发帖数: 18644 | 2 investigators are actively pursuing the notion that the plane was diverted "
with the intention of using it later for another purpose."
现在该美国着急了吧。。。 | b****l
发帖数: 23606 | 3 对啊。他们要撞中国，不会掉头飞啊。装作没事发生，等几个小时再街机就行
了啊。看来不是为了撞中国，还是打算撞欧美联盟。
"
【在 s*y 的大作中提到】
: investigators are actively pursuing the notion that the plane was diverted "
: with the intention of using it later for another purpose."
: 现在该美国着急了吧。。。
| G*****h
发帖数: 33134 | 4 擦的，位置也要保密？难道是某米军基地上空？
where
【在 g**1 的大作中提到】
: Missing Flight Left Data Trail
: Jetliner 'Pinged' Satellites With Location, Altitude for Hours After
: Disappearance
: Communication satellites received intermittent data "pings" from a missing
: Malaysia Airlines 3786.KU -4.08% jet, giving the plane's location, speed
: and altitude for at least five hours after it disappeared from civilian
: radar screens, people briefed on the investigation said Thursday.
: The final satellite ping was sent from over water, at what one of these
: people called a "normal" cruising altitude. The people declined to say where
: specifically the transmission originated, adding that it was unclear why
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