DFDR

The flight data recorder (FDR) is a flight recorder used to record specific aircraft performance parameters. A separate device is the cockpit voice recorder (CVR), although some versions (including the original) combine both in one unit. Popularly, though almost always falsely, known as the black box used for aircraft mishap analysis, the FDR is also used to study air safety issues, material degradation, and jet engine performance. These ICAO regulated "black box" devices are often used as an aid in investigating aircraft mishaps, and its recovery is second only in importance to the recovery of victims’ bodies. The device's shroud is usually painted bright orange and generally located in the tail section of the aircraft. The current FAA TSO is C124b [1] titled Flight Data Recorder Systems. This revision came into effect in April 2007.
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