The agonizing search for the vanished MH370 and its equally confounding black box is now reaching into seemingly inaccessible depths, with the best technologies reaching their limit.
Chinese ships searching for missing Malaysia Airlines Flight MH370 on Wednesday adjusted their search area and moved southward.
Chinese vessels have covered 646,000 square kilometers in the southern Indian Ocean in search of the missing Malaysian flight MH370, said the China Maritime Search and Rescue Center on Tuesday.
A robotic submarine looking for the lost Malaysian jet began its second mission Tuesday after cutting short its first because the ocean waters where it was sent were too deep, officials said.
The autonomous underwater device Bluefin-21, which was deployed on Monday for its first search mission for MH370, faced unexpected depths and ended its mission prematurely, US navy Captain Mark Matthews said on Tuesday.
The search area for the missing Malaysian jet has proved too deep for a robotic submarine which was hauled back to the surface of the Indian Ocean less than half way.
The Australian and US searchers hunting for the missing Malaysian flight MH370 on Monday confirmed the underwater autonomous vehicle would be deployed "very soon".
An Australian official said crews will send the Bluefin-21 drone into the Indian Ocean for the first time to look for the plane on the sea floor.
Australian officials leading the search for a missing Malaysia Airlines are weighing when to deploy an underwater robot to aid in the hunt.
The hunt for the missing Malaysian jet continued to focus on a search for weakening radio signals from deep beneath the waves despite mounting evidence that the black boxes' batteries may finally have died.
After four strong underwater signals, all has gone quiet in the hunt for MH370, indicating the batteries on the black boxes may have died.
After four strong underwater signals in the past week, all has gone quiet in the hunt for missing Malaysia Airline Flight MH370, indicating that the batteries on the all-important black boxes may have finally died.
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