Tuesday, April 8, 2014
The searchers did not detect any pings on Tuesday and that may be because the batteries on the black boxes have expired.
They will continue to listen for pings because it’s possible that the batteries might not have expired and they need the pings to triangulate the precise location of the black boxes. Otherwise, it might take a long time of hit and miss searching of the ocean bottom to locate them.
Here’s the latest report from Sky News in Australia.
Two sets of possible black box pings picked up by the Australian vessel Ocean Shield in the southern Indian Ocean – one that was held for two hours and 20 minutes, and another for 13 minutes – remain the best lead so far.
Search co-ordinator Angus Houston said no more signals had been detected since those announced on Monday.
But the former defence force chief said strenuous attempts to pick up more would continue until there was no doubt the black box beacon’s battery, now two days past its 30-day life, had run out.
Batteries often lasted several days longer than that, so there was still hope, he said.
‘Until we stop the pinger search, we will not deploy the submersible … unless we find another transmission,’ he told reporters in Perth on Tuesday.
‘If we can get more transmissions, we can get a better fix on the ocean floor, which will enable a much more narrowly focused visual search for wreckage.
‘If we go down there now and do a visual search, it will take many, many days because it’s very slow, very painstaking work to scour the ocean floor.’
He said some of the false acoustic leads that had been discounted had come from a search ship.
‘It got its own transmissions back again. Funny things happen in that environment and you can’t assume things,’ he said.
‘We think the Ocean Shield transmission is probably the most promising one and we continue to prosecute that.’
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