the flight recorder. >> boosting confidence, they were so close to confirm thinking was mh-370 that is because the search vessel ocean shield picked up pulse signals twice tuesday, the first lasting five and a half minutes, the second, a full seven minutes. >> authorities say it is still too early to tell whether the pinger signals are coming from the wreckage of malaysian airlines flight 370. the search area is being refined based on the signal detections. >> and officials say it is still too soon to deploy the navy's bluefin-21, the deep water search vehicle. let's get more on the information now from new york. >> he has contributed to flying magazine and he joins us as we said from cnn new york. thank you for sticking around and talking with us, because this is such big news coming from australia. this is what they have been