we have also learned this afternoon that engineers now believe they can program bluefin to go deeper than originally planned. the probe s first mission on monday was aborted after about six hours when it went below its current maximum depth limit. as the search goes on there are still many more questions than answers. and you have been tweeting us your questions by the thousands and we ve got top aviation experts standing by to answer them for you. like this great question, what other assets exist besides the bluefin that could be used to locate the wreckage? now we want to go to the latest in the search for malaysian airlines flight 370. i want to turn to cnn reporters, michael holmes in perth, joe johns in kuala lumpur. joe johns, good evening to you first. turns out they didn t find data from the bluefin they brought back up yesterday but it had to return hours before it finished