`` It 's something that you 'd want to do very carefully , very slowly and very deliberately . '' The cockpit recorder holds ` ` every single sound that occurs on the flight deck , '' former pilot says . The flight deck recorder will ` ` give a very detailed description of what was going on , '' he tells CNN .
The cockpit recorder holds ` ` every single sound that occurs on the flight deck , '' former pilot says . The flight deck recorder will ` ` give a very detailed description of what was going on , '' he tells CNN .