but this is 30 pounds. people joke, why not make the whole plane out of the black box? it would never fly. this is a reinforced box to keep that data secure. how do you find it? this thing, we call it pings, it sends out a signal and we re going to drive a signal locater over the top, drag it behind a boat. that right there would be the tpo 25. but skd be anything, listening for that ping at about 37.5 kilohertz. if it finds a click, click, click say it s clicking. you ll hear the click, click, click, it will get louder, louder, louder and then softer, softer, softer. they ll record it and try to triangulate where it s loud in both directions. if that doesn t work, because this is a shallow recovery, we re going to be able to do a little bit of a wider, i