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http://www.latimes.com/world/worldnow/la-wn-malaysia-flight-370-20140427,0,6592653.story?track=rss#axzz30AsUDnJe
28 April 2014| last updated at 02:59PM
MH370 Tragedy: Undersea search expanded, may take 6-8 months
SYDNEY: The chance of finding floating debris from a missing Malaysia Airlines jetliner has become highly unlikely, and a new phase of the search will focus on a far larger area of the Indian Ocean floor, Australian Prime Minister Tony Abbott said on today.
The search effort for Malaysia Airlines Flight MH370, which vanished while flying from Kuala Lumpur to Beijing on March 8 with 239 people on board, has so far failed to turn up any trace of wreckage from the plane.
Given the amount of time that has elapsed, Abbott said that efforts would now shift away from the visual searches conducted by planes and ships and towards underwater equipment capable of scouring the ocean floor with sophisticated sensors.
He admitted, however, that it was possible nothing would ever be found of the jetliner.
"We will do everything we humanly can, everything we reasonably can, to solve this mystery," he told reporters in Canberra.
Malaysia, China, Japan, New Zealand, South Korea, Britain and the United States are assisting Australia in conducting the most expensive search in aviation history.
It remains unclear what caused the Boeing 777 to veer sharply off its course and disappear from radar as it prepared to cross into Vietnamese airspace.
Malaysian authorities have still not ruled out mechanical problems, but say evidence suggests it was deliberately diverted from its scheduled route.
Malaysia is under pressure to bring closure to the grieving families by finding wreckage to determine definitively what happened to the aircraft.
But the empty expanse of water northwest of the Australian city of Perth is one of the most remote places in the world and also one of the deepest, making the search complicated.
Authorities had been focusing on a 10 square km (6.2 square mile) stretch of seabed about 2,000 miles from Perth, after detecting what they suspected was a signal from the plane's black box recorder on April 4.
The U.S. Navy Bluefin-21 underwater drone searching the seabed has so far failed to turn up any sign of the plane.
"We are still baffled and disappointed that we haven't been able to find undersea wreckage based on those detections," Abbott told reporters.
Abbott said that the new search area, which spans 700 km by 80 km (435 miles by 40 miles), could take between 6-8 months to completely examine, at a cost to Australia of as much as A$60 million (US$55.69 million).
The search operations have up until now been handled primarily as a military operation by the countries involved, but Abbott said that one or more commercial companies would be hired by Australia and Malaysia to handle the next phase.
Angus Houston, head of the Australian agency coordinating the search effort, offered a sobering assessment of the operation.
"We haven't found anything anywhere that has any connection to MH370," Houston said during the Abbott news conference. --AFP
http://www.latimes.com/world/worldnow/la-wn-malaysia-flight-370-20140427,0,6592653.story?track=rss#axzz30AsUDnJe
Private firms to search for Malaysia Airlines Flight 370
This map provided by the Joint Agency Coordination Center shows details in the search for the missing Malaysia Airlines Flight 370 in the southern Indian Ocean. (Joint Agency Coordination Center / April 23, 2014)
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BEIJING -- Private companies specializing in deep ocean search will be hired to continue the quest to find Malaysia Airlines Flight 370, Australia’s prime minister said Monday, and the cost could run more than $55 million and take six to eight months.
The U.S. Navy’s robotic submarine Bluefin-21 has searched more than 150 square miles of the floor of the Indian Ocean in an area where investigators thought they had detected pings from the Boeing 777’s black box transmitters in early April. We are “baffled and disappointed” that no wreckage had been found 52 days into the search, Prime Minister Tony Abbott said at a news conference in Canberra, Australia.
Now, Abbott said, the undersea search area will be expanded from the most probable impact zone to a much wider area totaling 21,621 square miles.
Side-scan sonar devices towed behind ships will be used to traverse the expanded search area, said retired Australian Air Chief Marshal Angus Houston, who has been coordinating search efforts from Perth, Australia.
Abbott indicated that air searches for surface debris would be discontinued imminently. “It is highly unlikely we will find any debris on the ocean surface” now, he said, explaining that any material from the plane probably would have become waterlogged and sunk by this time.
“We are moving to a phase focused on searching the ocean floor over a much larger area,” Abbott said. So far, the visual search area has encompassed 334 flights totaling more than 3,000 hours and scoured 1.7 million square miles of the ocean surface.
Until the private companies can begin working, Abbott said, the Bluefin-21 as well as Australian, Malaysian and Chinese ships will continue operating in the search area. An Australian military plane will remain on standby in case suspected wreckage is identified, he added.
“I want the families to know, I want the world to know, Australia will not shirk its responsibility,” Abbott said. “We will not let people down.”
Asked about his comments several weeks ago that investigators were close to finding the wreckage, Abbott said he was “not in the business of making excuses for failure” but added that the search was perhaps the most difficult in history.
“Enormous efforts have been made,” he said, describing the jet’s disappearance as an “extraordinary mystery.”
Houston said investigators believe they are looking in the right area. “We were quietly optimistic,” he said, that the Bluefin-21 would find the jet wreckage.
But he noted that it took more than two years to find the undersea wreckage of Air France Flight 447 in the Atlantic Ocean after it crashed in 2009, and that in that case, the plane was found just 6.5 nautical miles from its last known position. Data about the last known position of Malaysia Airlines Flight 370 is much less robust.
Asked about the cost of the search so far, Abbott declined to provide specifics, saying authorities had been using military assets that governments would be “paying for anyway.”
The Boeing 777 vanished March 8 en route from Kuala Lumpur, Malaysia, to Beijing with 239 people aboard. Authorities have said they believe a deliberate act by someone aboard the aircraft led to its disappearance, but they have not offered more specifics.
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