Effective communication among air safety professionals is only as good as the information being communicated. Data sharing cannot be effective unless the data are relevant to aviation safety problems, and decisions based on faulty data are likely to be invalid. The validity of aviation safety data depends on satisfying two primary characteristics. Data must accurately represent or conform to the real world (conformancec), and it must be relevant or useful to addressing the problems at hand (utility). The Federal Aviation Administration, in efforts to implement the Safety Performance Analysis System (SPAS), identified significant problemds in the quality of the data which SPAS and FAA air safety professionals would use in defining the state of aviation safety in the United States. These findings were reinforce by Department of Transportation Inspector General and General Accounting Office investigations into FAA surveillance of air transport operations.
An investigation was conducted of the values or worth functions pilots attribute to weather and terrain variables in making decision about flight in a...
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