Plane hunt yields no debris as search enters last zone

Bloomberg

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In this handout image provided by Australia's Department of Defence, The Phoenix International Autonomous Underwater Vehicle (AUV) Artemis is craned over the side of Australian Defence Vessel Ocean Shield in the search for missing Malaysia Airlines flight MH 370 on April 18, 2014.

An international team hunting for the missing Malaysian passenger jet is trawling the last leg of a search zone for wreckage after an unmanned submarine failed to find traces of the aircraft.
The Bluefin-21, which bounces sound waves off the Indian Ocean floor to create images of the seabed, has scoured 80 percent of the targeted area without establishing any “contacts of interest,” according to an e-mailed statement from the Joint Agency Coordination Centre, the Australian body that’s coordinating the effort. The submarine is in its ninth mission.
“The search will continue,” the JACC said. “We are currently consulting very closely with our international partners on the best way to effect this for the future.”
The search by planes for wreckage was suspended because of poor weather conditions in the area as a result of Tropical Cyclone Jack, the JACC said. Ten ships will continue scouring about 49,491 square kilometers (19,100 square miles) of ocean off the coast of Western Australia today for debris from the aircraft, which went missing March 8 with 239 people on board.
The dives are within a 10-kilometer (6-mile) radius of where audio signals were detected on April 8. No pulses have been heard since then and authorities say the batteries in the aircraft’s black boxes have probably expired.
Total blank
“It’s important this lead is pursued to its completion so we either confirm or discount the focused underwater area as the final resting place of MH370,” the JACC said.
No physical trace of the Malaysian Airline System Bhd. (MAS) jet has been found as the search enters its 46th day -- the longest hunt for a missing passenger plane in modern aviation history.
Search crews hunting for the wreck may need to review the area of focus again because the absence of any surface debris suggests the correct location has still not been identified, the German oceanographer who helped find the remains of Air France (AF) 447, said last week.
The optimism injected into the search after pinger signals were picked up may also prove ill-founded because the sounds could have come from sources other than the emergency beacons, said Peter Herzig, executive director of the Geomar Helmholtz Center for Oceanographic Research in Kiel, Germany.
Police investigation
With all the planes and ships combing the Indian ocean for signs of debris, it’s unusual to draw a total blank, Herzig said. Given that the force of an aircraft hitting the ocean is similar to collision with concrete, this should leave at least some debris floating, as was in the case with the Air France 447 plane en route from Rio de Janeiro to Paris in 2009, he said.
Finding the cockpit-voice and flight-data recorders are key to determining why the Boeing Co. 777-200ER jet vanished. Flight 370’s disappearance has baffled authorities because contact was lost less than an hour into a routine trip to Beijing from Kuala Lumpur.
The widebody plane vanished from civilian radars while headed north over the Gulf of Thailand, then doubled back and flew over Peninsular Malaysia and on into some of the world’s most remote waters.
While the motive behind that heading remains unknown, MH370 was deliberately steered south on a path ending in the Indian Ocean, Malaysian Prime Minister Najib Razak has said.
Malaysian police are continuing with their investigations and have interviewed 260 people so far, Inspector General of Police Khalid Abu Bakar said in a text message yesterday.
“Investigations are still on-going and nothing can be revealed yet,” he said. “We will investigate as long as it takes to find out what really happened.”

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