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Flight Data Recorders

By Patrick Mondout

The Flight Data Recorder (FDR) onboard the aircraft records many different operating conditions of the flight. By regulation, newly manufactured aircraft must monitor at least twenty eight important parameters such as time, altitude, airspeed, heading, and aircraft attitude. In addition, some FDRs can record the status of more than 300 other in-flight characteristics that can aid in the investigation. The items monitored can be anything from flap position to auto-pilot mode or even smoke alarms.

With the data retrieved from the FDR, the National Transportation Safety Board (NTSB) can generate a computer animated video reconstruction of the flight. The investigator can then visualize the airplane's attitude, instrument readings, power settings and other characteristics of the flight. This animation enables the investigating team to visualize the last moments of the flight before the accident.

Both the Flight Data Recorder and the Cockpit Voice Recorder have proven to be valuable tools in the accident investigation process. They can provide information that may be difficult or impossible to obtain by other means. When used in conjunction with other information gained in the investigation, the recorders are playing an ever increasing role in determining the probable cause of an aircraft accident.

Source: National Transportation Safety Board.


Air Safety References:
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Beaty, David. The Naked Pilot: The Human Factor in Aircraft Accidents. Airlife Publishing: England, 1996.
Cushing, Steven. Fatal Words: Communication Clashes and Aircraft Crashes University of Chicago Press: Chicago, 1997.
Faith, Nicholas. Black Box: The Air-Crash Detectives-Why Air Safety Is No Accident. Motorbooks International, 1997.
Gero, David. Aviation Disasters: The World's Major Civil Airliner Crashes Since 1950. Sutton, 2003.
Job, Macarthur. Air Disaster (Volume 1). Aerospace Publications: Fyshwick, Australia, 1995.
Job, Macarthur. Air Disaster (Volume 2). Aerospace Publications: Fyshwick, Australia, 1996.
Job, Macarthur. Air Disaster (Volume 3). Aerospace Publications: Fyshwick, Australia, 1999.
Krause, Shari Stamford. Aircraft Safety: Accident Investigations, Analyses & Applications. McGraw Hill, New York, 1996.
Macpherson, Malcolm. The Black Box : All-New Cockpit Voice Recorder Accounts Of In-flight Accidents. New York: William Morrow, 1998.
Macpherson, Malcolm. On a Wing and a Prayer: Interviews with Airline Disaster Survivors. Perennial, 2002.
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Stewart, Stanley. Emergency! - Crisis on the Flight Deck, 2nd Edition. Airlife Publishing, England, 2003.
Walters, James M. Aircraft Accident Analysis: Final Reports. McGraw-Hill Professional, 2000.
Wells, Alexander T. Commercial Aviation Safety, 3rd Edition. McGraw-Hill Professional, 2001.


 

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