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NTSB issues safety recommendations on FDR parameters
19 November 2003

The NTSB issued three safety recommendations, stating the need for flight data recorders that are capable of recording values that meet the accuracy requirements through the full dynamic range of each parameter at a frequency sufficient to determine a complete, accurate, and unambiguous time history of parameter activity, with emphasis on capturing each parameter’s dynamic motion at the maximum rate possible, including reversals of direction at the maximum rate expected. (NTSB)