Fate Of Malaysian Airlines MH370
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now reports pointing more and more towards a lone-wolf operation
looks like my 16 Mar 4:18pm post holds some water
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Originally posted by TehJarVu:
now reports pointing more and more towards a lone-wolf operation
looks like my 16 Mar 4:18pm post holds some water
Holds as much water as a bowl of fei fei wanton mee.
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Why didn't missing MAS jet passengers use their cellphones?
BANGKOK (AFP) - In the age of smartphones and social media, one question surrounding the disappearance of the Malaysian airliner is why none of the passengers tried to contact relatives, as they did during the 9/11 attacks.
Even the absence of phone calls or emails from those on board the Malaysia Airlines Boeing 777 could provide clues for investigators struggling to solve one of the greatest mysteries of modern aviation.
It may indicate that the plane was flying too high or was over water, or that the passengers were unconscious, possibly due to a change in cabin pressure.
Experts say the chances of the 239 people on board Flight 370 being able to use their mobile devices would have been better the closer they were to a mobile network on the ground.
Many are sceptical that the passengers or crew would have been able to establish and maintain a call using cellphones while travelling at speed, particularly at cruising altitude.
For mobile phones to be used, there must be a contact between the handset and the network - known as a "handshake". This requires a strong enough signal from both a transmission tower and the phone.
"Theoretically, 23,000 feet (7,000m) and 45,000 feet are a cell range that terrestrial mobile network could work with," said Singapore-based telecommunications consultant Koh Chee Koon, referring to unconfirmed reports of changes in the plane's altitude after it lost radar contact.
But given the limited transmission power of a commercial mobile phone, as well as the barrier presented by the plane body, "for the mobile phone to connect to the mobile network with acceptable strength and quality would require some luck", added Mr Koh.
Experts note that in the case of the September 11, 2001 attacks in the United States, the planes were flying at relatively low altitude over areas with cellphone coverage.
In any case most of the calls are believed to have been made from seatback phones and not mobile devices.
Recently some airlines have introduced technology to enable passengers to use their phones in the air using a small cellular base station on board, but Malaysia Airlines said this service was not available on Flight 370.
Without this, a cellphone cannot be used at an altitude of more than roughly 0.5km in the case of a commercial airliner, and must not be too far from a cell tower, according to Dr A.K. Dewdney, professor emeritus of computer science at the University of Western Ontario in Canada.
"No cellphone could possibly succeed from an airliner in mid-ocean, even if flying low over the water," he said.
"At normal cruising altitude no cellphone could possibly succeed in making ground contact as it is completely out of reach of the network of towers, in any case," added Dr Dewdney, who conducted experiments after the 9/11 attacks to test the capability of mobile telephones to make calls from the air.
Malaysia Airline chief executive Ahmad Jauhari Yahya said on Monday there was no evidence of any attempt by the people on board to make calls, but he added that "millions of records" needed to be processed.
"It's being done as part of the investigation," he said, without elaborating on the type of records being checked.
Deepening the mystery, Chinese media have reported that relatives heard ringing tones when trying to call passengers' mobile phones.
But experts believe this does not necessarily mean the phones were still functioning.
Even if nobody on board the plane tried to make a call, logs of the "handshakes" might provide some clues about the route taken by the jet after it disappeared.
While many phones would have been switched off in line with airline rules, some people may have forgotten to deactivate their devices.
But to trace any "handshakes" investigators face the challenge of collecting the unique identity numbers for the passengers' mobile devices, as well as signal data from network operators in countries along the possible flight paths, such as Myanmar which still has limited network coverage.
As the flight turned back and crossed over Malaysia after disappearing from radar en route to Beijing, it probably passed over a network area.
After that, the chances of any "handshakes" depend on how low and close to mobile towers the plane flew.
"Police track cellphones all the time by the last phone call they made," said Ken Dulaney, a US-based analyst with technology research firm Gartner.
But he added that this was only possible if the devices were in reach of a network.
"If they are not in coverage then no one can do anything," he said.
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One of the family members of the chinese passengers called passenger's mobile. There was ringing tone but nobody picked up.
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http://www.youtube.com/watch?v=B4Q56BUgUPo
probably some blackout
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Originally posted by SJS6638:
One of the family members of the chinese passengers called passenger's mobile. There was ringing tone but nobody picked up.
Caller hears ringing tone but the handphone might not ring at all according to the telephone companies. :)
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Originally posted by FireIce:
they just mobilized the whole worl;d's airforce
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hmm, this episode has shown that there are huge gaps in aircraft tracking and monitoring between and within each countries. A huge effort will be required to close this gap if they are to reduce such incidents in the future
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this one is clearly the rdr men sitting behind every coctries' control tower sleeping on tj\he job. even satellite also sleeping.
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Originally posted by FireIce:
where is singapore???!
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Originally posted by Summer hill:
where is singapore???!
SG is not searching southern corridor
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MH370 pilot received call from mystery woman before take-off: British paper
The captain of missing Malaysia Airlines flight MH370 received a two-minute call shortly before take-off from a mystery woman using a mobile phone number obtained under a false identity, as investigators question the pilot's estranged wife, a British newspaper reported.
It was one of the last calls made to or from the mobile phone of Captain Zaharie Ahmad Shah in the hours before his Boeing 777 left Kuala Lumpur on March 8, reported The Mail on Sunday.
Investigators are treating it as potentially significant because anyone buying a pay-as-you-go SIM card in Malaysia has to fill out a form giving their identity card or passport number.
Introduced as an anti-terrorism measure following 9/11, this ensures that every number is registered to a traceable person.
http://www.straitstimes.com/breaking-news/se-asia/story/mh370-pilot-received-call-mystery-woman-take-british-paper-20140323
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hmm...
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This is becoming weirder..have they discovered the debris?
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What debris?
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they keep finding things
but no confirm if those things are from the plane
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they keep finding things
on satelite images nia
and then 都��到
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i think the world airlines really have to retink what they can do to minimize or track airplanes during their flight. in particular to prevent crash. in the air its always hard to find a proper nearby land to land over the seas. what the world airline corp eed to do is jointly landfill island runway stops in between ocean flight routes. like that every x-nautical miles theere will be a small island with a basic flat runway for planes to land. they can do this during ww2, why not fill a few island with basic flat runways in between the oceans between flight routes. planes can have these 'islands' coordinates fixed in their flight data and when they need to land, they can do so in times of emergencys. these islands can also have miniature radar or tracking systems to tag planes that flew by, thereby noting their last lastest location and will be an ease in times of voodoo disappearances.
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they will � something by tmr morning..........
hopefully.........
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press conf at 10pm
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will it be the black box?
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black box going to no batt liao..........