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Sources say two communications systems on Malaysia Airlines Flight 370 stopped working, one after the other, before the flight vanished from civilian radar screens. Veteran crash experts say a cascading
series of electrical faults may cause that type of sequential failure, but it's also possible someone
on the plane deliberately turned the systems off. Bob Orr reports.
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Watch the video at Australian ABC News.
Someone on board the missing Malaysia Airlines plane deliberately shut off its communications and tracking systems and flew it off course for nearly seven hours after it vanished, Malaysian prime minister Najib Razak said today.
Speaking at a press conference this afternoon, Mr Najib confirmed that the plane's systems were gradually switched off and the plane was flown far to the west of its flight path before disappearing.
Shortly after the prime minister finished speaking police arrived at the home of the missing aircraft's pilot, Zaharie Ahmad Shah, to search for evidence, a senior police official told Reuters.
Mr Najib said data from the plane's last known satellite contact meant it could have headed along flight corridors stretching as far north as Kazakhstan or as far south as the southern Indian Ocean.
"These movements are consistent with deliberate action by someone on the plane," he said.
The Boeing 777-200ER disappeared a week ago with 239 people onboard, including six Australians, during a flight from Kuala Lumpur to Beijing.
Mr Najib said satellite data showed "with a high degree of certainty" that the communication and reporting system on MH370, known as the ACARS, was turned off before the plane reached the Malaysian peninsula.
A short time later the aircraft's transponder was also switched off.
"It then flew in a westerly direction back over Peninsular Malaysia before turning north-west," the PM said.
"Up until the point at which it left military primary radar coverage these movements are consistent with deliberate action by someone on the plane."
But Mr Najib said: "Despite media reports that the plane was hijacked, I wish to be very clear, we are still investigating all possibilities as to what caused MH370 to deviate from its original flight path."
Earlier today an unnamed Malaysian official told Associated Press that hijacking was no longer just a theory, but "conclusive".
The official said no motive had been established and it was not known where the plane had been taken.
Huge search corridors extend to Kazakhstan
Mr Najib said authorities had not been able to pinpoint the plane's last satellite contact due to the type of satellite data, but the plane could have ended up in a wide search area as far north as Kazakhstan.
"Based on this new data the aviation authorities of Malaysia and their international counterparts have determined that the plane's last communication with the satellite was in one of two possible corridors," he said.
"The northern corridor stretching approximately from the border of Kazakhstan and Turkmenistan to southern Thailand or the southern corridor stretching across from Indonesia to the southern Indian Ocean.
"The investigation team is working to further refine the information."
He said new data showed the last communication between the missing plane and satellites at 8:11am Malaysian time.
That is almost seven hours after it dropped off civilian air traffic control screens at 1:22 am last Saturday, less than an hour after take-off.
The search for the plane originally centred on the South China Sea, but authorities have shifted their focus west of the intended flight path to the Indian Ocean.
"We are ending our operations in South China Sea and reassessing the redeployment of our assets," Mr Najib said.
He said 14 countries, 43 ships and 58 aircraft were now involved in the search.
"It is widely understood that this has been a situation without precedent," he said.
ABC/Reuters
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ប្រែសម្រួលដោយ៖ ស៊ុន ណារិន | ថ្ងៃសៅរ៍ ទី15 ខែមិនា ឆ្នាំ2014, VOD
រូបភាពពីAP
មន្រ្តីរដ្ឋាភិបាលម៉ាឡេស៊ី ឲ្យដឹងថា អ្នកស៊ើបអង្កេតដែលពាក់ព័ន្ធ សន្និដ្ឋានចុងក្រោយថា យន្តហោះ ដែលបានបាត់អស់រយៈពេលមួយសប្តាហ៍មកហើយនោះ ត្រូវបានប្លន់។
នេះជាការបញ្ជាក់ចុងក្រោយ បន្ទាប់ពីការស៊ើបអង្កេតជាច្រើនថ្ងៃ និងការស្វែងរកយន្តហោះ មិនមានលទ្ធផល។សារព័ត៌មានAP ចេញផ្សាយនៅថ្ងៃសៅរ៍នេះ ឲ្យដឹងថា អ្នកស៊ើបអង្កេតសន្និដ្ឋានថា មនុស្សម្នាក់ ឬលើសនេះ ជាមួយបទពិសោធន៍ហោះហើរដ៏ជំនាញ បានប្លន់យន្តហោះម៉ាឡេស៊ីដែលបានបាត់ទៅ ដោយបិទឧបករណ៍ទាក់ទងទាំងអស់ ព្រមទាំងបង្វែរទិសដៅហោះហើរ។ មន្រ្តីរដ្ឋាភិបាលម៉ាឡេស៊ី ដែលពាក់ព័ន្ធនឹងការស៊ើបអង្កេត និយាយនៅថ្ងៃសៅរ៍នេះ ដោយសារគាត់មិនត្រូវបានអនុញ្ញាតក្នុងការនិយាយទៅកាន់អ្នកសារព័ត៌មាន។
មន្រ្តីនិយាយថា មិនមានតំរុយ ដែលត្រូវបានរកឃើញ ហើយមិនច្បាស់ទេថាតើយន្តហោះនៅទីណារហូតមកដល់ពេលនេះ។ មន្រ្តី បញ្ជាក់ទៀតថា ការសន្និដ្ឋានចុងក្រោយ គឺយន្តហោះត្រូវបានប្លន់ ដោយសារ សញ្ញាទំនាក់ទំនាក់របស់យន្តហោះ ត្រូវបានបិទដោយចេតនា ហើយទិន្នន័យបង្ហាញផ្លូវយន្តហោះ និងការចង្អុលបង្ហាញយន្តហោះ ត្រូវបានបង្វែរទៅលើផ្លូវមួយ ដើម្បីចៀសពីការចាប់បានរបស់រ៉ាដា។
យន្តហោះម៉ាឡេស៊ី ប្រភេទBoeing 777 (ជើងហោះហើរMH370) ដឹកអ្នកដំណើរចំនួន២២៧នាក់ និងអ្នកបម្រើលើយន្តហោះ ១២នាក់ (សរុប ២៣៩នាក់)។ យន្តហោះ បានចេញដំណើរពីទីក្រុងកូឡាឡាំពួ ប្រទេសម៉ាឡេស៊ី ទៅកាន់ទីក្រុងប៉េកាំងប្រទេសចិន កាលពីវេលាម៉ោងជាង១២យប់ថ្ងៃសៅរ៍ តែបានបាត់ការទំនាក់ទំនងពីរម៉ោងបន្ទាប់។
មន្ត្រីនិយាយថា យន្តហោះរបស់ម៉ាឡេស៊ី បានព្យាយាមត្រឡប់មកវិញ មុនពេលដែលយន្តហោះនោះ បាត់ការទាក់ទង។
អ្នកដំណើរនៅលើយន្តហោះនោះ មាន១៤ជាតិសាសន៍ ក្នុងនោះមានជនជាតិចិន ១៥៣នាក់ ជនជាតិម៉ាឡេស៊ី ៣៨នាក់ ជនជាតិឥណ្ឌូនេស៊ី ៧នាក់ អូស្ត្រាលី ៦នាក់ ឥណ្ឌា ៤នាក់ បារាំង៤នាក់ អាមេរិក៣នាក់ និងជនជាតិដទៃទៀត៕
សរសេរមកកាន់ លោក ស៊ុន ណារិន តាមរយៈsun_narin@vodhotnews.com
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