CNN CNN Tonight March 26, 2015 02:55:00
Which records the parameters as it goes through the sky, and the primary device that you can see, that sis the cockpit voice recorder, but the part that is smashed, those are analog converters converters that take the analog sound like we are talking to put it in numbers, and they are stored in the other device which is reinforced and stainless steel, and many, many layriers of insulation inside of it to protect it from heat, and that is the part on the flight data recorder missing, so they have...
Cockpit Voice Recorder Stainless Steel Outside Casing Memory Chips Flight Data Recorder Missing Memory Chip
Source: archive.org