Friday, Oct 31, 2014

Malaysia military tracked missing plane to the west coast

A Chinese relative of passengers aboard a missing Malaysia Airlines plane is surrounded by media as she answers questions about how families are being compensated outside a hotel room. (AP) A Chinese relative of passengers aboard a missing Malaysia Airlines plane is surrounded by media as she answers questions about how families are being compensated outside a hotel room. (AP)
Reuters | Kuala Lumpur | Posted: March 11, 2014 7:11 pm | Updated: March 11, 2014 8:24 pm

Malaysia’s military believes the jetliner missing for almost four days turned and flew hundreds of kilometres to the west after it last made contact with civilian air traffic control off the country’s east coast, a senior officer told Reuters on Tuesday. In one of the most baffling mysteries in recent aviation history, a massive search operation for the Malaysia Airlines Boeing 777-200ER has so far found no trace of the aircraft or the 239 passengers and crew.

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Malaysian authorities have previously said flight MH370 disappeared about an hour after it took off from Kuala Lumpur for the Chinese capital Beijing. “It changed course after Kota Bharu and took a lower altitude. It made it into the Malacca Strait,” the senior military officer, who has been briefed on investigations, told Reuters.

That would appear to rule out sudden catastrophic mechanical failure, as it would mean the plane flew around 500 km (350 miles) at least after its last contact with air traffic control, although its transponder and other tracking systems were off.  A non-military source familiar with the investigations said the report was one of several theories and was being checked.

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At the time it lost contact with civilian air traffic control, the plane was roughly midway between Malaysia’s east coast town of Kota Bharu and the southern tip of Vietnam, flying at 35,000 ft (10,670 metres). The Strait of Malacca, one of the world’s busiest shipping channels, runs along Malaysia’s west coast.

Malaysia’s Berita Harian newspaper quoted air force chief Rodzali Daud as saying the plane was last detected at 2.40 a.m. by military radar near the island of Pulau Perak at the northern end of the Strait of Malacca. It was flying about 1,000 metres lower than its previous altitude, he was quoted as saying. There was no word on what happened to the plane thereafter.

The effect of turning off the transponder is to make the aircraft inert to secondary radar, so civil controllers cannot identify it. Secondary radar interrogates the transponder and gets information about the plane’s identity, speed and height. It would however still be visible to primary radar, which is used by militaries.

Police had earlier said they were investigating whether any passengers or crew on the plane had personal or psychological problems that might explain its disappearance, along with the possibility of a hijack, sabotage or mechanical failure. There was no distress signal or radio contact indicating a problem and, in the absence of any wreckage or flight data, police have been left trawling through passenger and continued…

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