the task force and the strain defense assets involved in the search for mh 370. on my right, we have the constable from the maritime safety authority. we have bob armstrong from atsb, the australian transportation safety bureau. i would like to update you on the latest developments rega regarding search for mh 370. as you re aware, there have been no confirmed signal detections since last tuesday night perth time. today is day 38 of the search. the guaranteed shelf life of the batteries on the aircraft black boxes is 30 days.
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
it is onboard australia s ocean shield. it picked up two ping signal detections just over this weekend. the first one actually for more than two hours. the second for about 13 minutes. and cnn has now turned around what those clicks sounded like this weekend. that s what they heard. that s what they re listening for again. relocating these pings. now the main focus. today the search zone is drastically scaled back, reduced to 30,000 square miles. here you have 14 ships, 14 aircraft involved in today s search. they are on borrowed time, as today we keep counting day 33 since that plane vanished. with the 30-day more or less battery life of those black boxes, really more or less out of juice. australia s defense minister said they re holding nothing
i stated that the ocean shield would be delayed from going to the approximate area where the haixun 01 had detected the signals while she continued her own investigations. today i can report some very encouraging information which has unfolded over the last 24 hours. the towed pinger locator deployed from the australian defense vessel ocean shield has detected signals consistent with those emitted by aircraft black boxes. two separate signal detections have occurred within the northern part of the defined search area. the first detect was held for approximately two hours and 20 minutes. the ship then lost contact before conducting a turn and attempting to reacquire the signal.
consistent with those emitted from aircraft like boxes. two separate signal detections have occurred in the northern part of the search area. the first detection was held for approximately 2 hours and 20 minutes. the ship then lost contact before conducting a turn and attempting to reacquire the signal. the second detection on the return leg was held at approximately 13 minutes. on this occasion, two distinct pinger returns were audible. significantly this would be consistent for transmissions from both the flight data recorder, and the cockpit voice rd recorder, need to be honest with you, it could be days to establish where the detections can be confirmed as being from