cautious man, prerequisites for a job that involves not just knowledge, but patience, lots of patience. from the flight data recorder, we obtain a raw data file. reporter: just ones and zeros. which contains just ones and zeros. reporter: the boxes contain a wealth of information. up to 2,000 separate pieces from the data recorder alone. high technology built into a waterproof, fire proof, shock proof shell. at the end of this complex shane of information and analysis can be this, an animated representation of a tragedy. this one from a 2010 training flight. two dead after a simulated engine failure went wrong. a lot of the symmetry which couldn t be controlled and the aircraft ended up impacting the terrain, unfortunately. reporter: and you re able to recreate this thing from the black boxes? that s right. this is based on flight data recorder information. reporter: the size of the boxes is deceptive in some ways. the vast majority of it containing technology that