Reporting from the news station Channel News Asia , Wednesday, April 16, 2014 , the Bluefin - 21 was forced to pull back on Tuesday night because of a technical problem on the sonar . Previously , when lowered on Monday night for the first time , the drone mission is also canceled automatically .
Therefore , the depth of the sea in the area being combed reaches more than 4,500 meters . Meanwhile , the yellow oval object , just can roam up to a maximum depth of 4,500 meters .
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However , unknown cause of the cessation of the second mission on Tuesday night or how long the object is under the sea .
" Vehicle underwater drones , Bluefin - 21 , was forced to be withdrawn on Wednesday morning, because of a technical problem and need to be repaired , " said a representative of the Board of the Joint Coordination Center ( JACC ) Australia .
Bluefin - 21 up to them, will remain deployed and is currently continuing quest under the sea .
Before relegated for the third time , the Australian Navy have downloaded the data recorded in the drones . The process takes place aboard the Navy land of kangaroos , Ocean Shield .
" Data analysis early yesterday morning download results indicate no significant case , " said JACC .
JACC also explain why the first mission was canceled . In fact , supposedly , the drone can be operated for 16 hours once relegated to the bottom of the sea .
According to the JACC , the operation of the Bluefin - 21 on Monday night has exceeded the threshold into the maximum that can be achieved over 4,500 meters . This was reiterated by U.S. Navy personnel , Captain Mark Matthews from Perth .
" In this case , the drone was programmed to be able to fly over 30 meters from the ocean floor to get a good mapping of the situation there . When Bluefin - 21 has reached its maximum depth limit , the object can automatically cancel the mission , " said Matthews .
The question that arises then , is actually how the ocean is now being combed .
Commander JACC , Angus Houston , explained that the Bluefin - 21 can not operate at depths greater than 4,500 meters . However , he says that there are other vehicles that can reach deeper locations .
" Usually there are many underwater vehicles larger . They can reach deeper locations . And of course , we are considering the possibility of using these tools , " said Houston on Monday .
So far , the best lead they have only four signal pings are thought to have come from the black box . Houston added there is the possibility of oil spills see in the search area .
Houston thought , the oil spills from ships not owned joint SAR team . However , it took a few days to test oil samples on the mainland .
U.S. Navy predicts that the deployment of the Bluefin - 21 will take between six weeks to two months to comb through the entire search area .
Meanwhile , on Wednesday , the combined rescue team re- deploy 14 planes and 11 ships to comb an area of 55 151 square kilometers and more than 2,000 kilometers northwest of Perth . ( art )