pingers which send out signals under water. it s called the underwater locator beacon in fact on this image. miguel marquez sat down with an expert to find out what it will sound like under water. reporter: the search for airasia 8501 narrowing the hunt on for a tiny signal in a turbulent sea. minute pings from a device attached to the flight data recorder. a pinger has a specific pulse. it has comes at a specific interval and a specific frequency. correct. reporter: but still hard to find. yes, it is. reporter: forensic audio expert paul ginsburg has simulated what a pinger would sound like undistorted and without any competing sounds. [ beeping ] but says ginsburg there is plenty competing for attention at the bottom of the sea. a school of fish swimming, currents echoes from the signal
and i can discuss, but we do appreciate you joining us. jeffrey thomas from perth. pleasure. well time is ticking away on those batteries, as you know in those black box pingers. if they do get to the 5irarea of the data recorders and do get them that will be absolutely critical. here with more on what s in those recorders and what valuable information they hold is miguel marquez. reporter: the search for airasia 8501 narrowing. the hunt on for a tiny signal in a turbulent sea. new pings from the data flight recorder. the pinger has a pulse and it comes in a specific interval and specific frequency. correct. but it s still hard to find? yes, it is. reporter: forensic audio expert paul beginsginsberg has simulated what it will sound
sequential type of information and then put it together and then that paints the whole picture. so there s not one specific thing. it s the combined information that really gives you the best picture. miles, when you talk about how the world is still relying on pingers, i hear you. and i m with you on your preaching. what kind of technology should there be on planes so as to better determine the last known position? well the technology exists and it s been adopted by a few airlines and basically, the idea is to take the information which is being fed into the black box and when something goes wrong on the airplane it starts sending a signal either by satellite or to the ground to the operations center saying hey, there s trouble on this aircraft. you should start paying attention. this can happen automatically. it can happen at the command of the crew with the panic button or in a situation where an aircraft is non-responsive the
to say. but yes, they would have been on the lookout. but it is now a little bit too late i fear. yeah. and then les, this is a question that has been asked a lot. what happens if they don t locate the data recorder in time? i don t know if it s a question of in time. i think the data recorders will be located, period. whether they locate it by virtue of finding the pingers and locating it that way or the wreckage itself. so i don t think it is an issue. we re dealing with much shallower water than with malaysia flight 370. and worse case scenario even if they did not find those data and the black boxes there are still ways to piece together almost literally what happened with the airplane just by virtue of analyzing the wreckage itself. okay. and then captain, could the body
liberalism defiend by his catholic faith and the first italian american to become governor and founder of a political dynasty in state. his son, andrew cuomo sworn in for his second term as governor earlier today. as it was turn out only hours before his father passed away. of course his younger son, chris cuomo is our friend and our colleague, the anchor of cnn s new day. mario cuomo, dead today at 82. and overseas in indonesia. the first funeral for a victim of the crash of flight 8501. nine bodies recovered so fafrment including one still wearing her flight attendant s uniform. no sign yet of the crucial black boxes. the battery s powering the pingers that send acoustic signals from the black boxes have only about 25 days of power left. that according to an indonesian official. anthony bourdain, parts unknown,