Preliminary data from unmanned submarines that were deployed last Monday did not show anything related to Malaysia Airlines flight MH370 missing , according to authorities on Tuesday .
Unmanned submarine Bluefin - 21 belongs to the U.S. Navy ( U.S. ) downgraded to scan the seabed of the Indian Ocean . Bluefin - 21 is expected to find debris MH370 . In the first mission throughout Monday , the submarine to explore beneath the sea for six hours .
Browsing achieve operating depth limit Bluefin - 21 is approximately 4.8 kilometers . Once reaching the depth limit , submarine safety system that automatically lifted back to the surface . Nihilnya fruit Bluefin - 21-day trip that illustrates the difficult and protracted mission .
The main goal is finding mission flight data recorder and cockpit voice recorder . However , without a second terlacaknya signal object " black box " that in the past six days , most likely the location of the emergency battery indicator on the black box was dead . That is why the search team lose Bluefin - 21 , which uses sonar to scan the sea floor ..
" I need to remind you ... that the use of submarines [ not necessarily ] led to terlacaknya wreckage , " said Marshal Angus Houston Australian Air Force . He is the head of a multinational team will search the Boeing 777 . " However , this is the best lead we have . Instructions should be pursued as well as possible . "
If one day Bluefin identify black box or other remnants of the plane , the search team will next face difficult decisions : when shooting debris . In addition , they also need to specify which parts should be removed for further analysis . Increasingly complex choices at a depth of 4.8 kilometers below sea level .
Mapping the location of debris on the seabed is an important first step performed prior to lowering the submarine with a camera to document the location . However , the search team would not shoot it early , because they have to ascertain what exactly is on the location of debris .
Challenge to determine the exact time , said Claude Lelaie , former senior executives of Airbus Safety Group NV , " is more complex than the common estimate . " Removal of all the objects to be examined by investigators " could last for many years . "
Verification of debris by Bluefin does not mean removal of debris to the surface can be directly carried out , said John Purvis , former head of Boeing's accident investigation . The rescue operation requires different technologies , with different types of missions that much anyway , Purvis said . " The episode is difficult even started . "WSJ
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