CNN CNN Newsroom With Brooke Baldwin March 25, 2015 19:15:00
Cockpit voice recorder because there's a microphone over the captain, there's a microphone with the first officer and there's two area mikes as well. >> are there different sounds? depending on what's wrong on any given airplane, do the sounds differ depending on what's happening? >> absolutely. >> really? >> absolutely. so you might get a warning horn that will tell you one particular fault. there will be a warning chirp for another fault. there will be a siren for another fault. if the flight management computer is warning of something, it will make a particular noise. if they've deployed th...