Malaysia Airlines MH370 plane hunt now totally rests on drone in the vast Indian Ocean depths

Apr 15 2014, 20:43 IST
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Ocean Shield sails in Indian Ocean as it searches for missing Malaysia Airlines Flight MH370. Reuters Ocean Shield sails in Indian Ocean as it searches for missing Malaysia Airlines Flight MH370. Reuters
SummaryWeeks have passed, but search teams have found not even one piece of vanished Malaysia Airlines MH370 plane.

A US Navy underwater drone sent to search for a missing Malaysia Airlines MH370 plane on the floor of the Indian Ocean could take up to two months to scour a 600 sq km area where the plane is believed to have sunk, US search authorities said on Tuesday.

The prediction coincided with the end to the abbreviated first mission by the Bluefin-21 autonomous underwater vehicle six hours into what was meant to be a 16-hour operation on Monday after it exceeded its 4.5 km (14,750 feet) depth limit and was automatically returned to the surface.

The introduction of the undersea drone marks a new slower paced phase in the search for Malaysia Airlines MH370 which disappeared on March 8 and is presumed to have crashed thousands of km (miles) off course with the loss of all 239 people on board.

Authorities, who soon plan to scale back the air and surface search, are confident they know the approximate position of wreckage of the Malaysia Airlines MH370 Boeing 777, some 1,550 km (960 miles) northwest of Perth, and are moving ahead on the basis of four acoustic signals they believe are from its black box recorders.

But having not heard a "ping" for almost a week and with the batteries on the locator beacons two weeks past their 30-day expected life, the slow-moving "autonomous underwater vehicle" was launched on Monday to try and locate Malaysia Airlines MH370 plane's wreckage.

"The AUV takes six times longer to cover the same area as the towed pinger locator. It is estimated that it will take the AUV anywhere from six weeks to two months to scan the entire search area," Lt. J.G. Daniel S. Marciniak, a spokesman for the U.S. Seventh Fleet, said in a statement.

From its aborted first mission, the Bluefin-21 produced six hours of data which authorities analysed to find no objects of interest, Marciniak added. The drone was expected to embark on its second search mission late on Tuesday.

The robot, which takes two hours to descend another two to return to the surface, as well as several hours to download data, will build up a detailed acoustic image of the area using sophisticated "sidescan" sonar. It hopes to repeat its success in finding a F-15 fighter jet which crashed off Japan last year.

It is capable of spending up to 16 hours scouring the sea floor. If it detects possible wreckage, it will be

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