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Abstract
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The findings of the study performed for FAA/DOT Office of Aviation Safety are presented. The level of safety of performance in the ATC system after the strike of August 1981 was analysed.
There were two parameters of interest, viz. 1, near mid air collisions, 2, operational error reports, of these, the operational errors related more directly to the performance of ATC and was analyzed in detail. The data consisted of 54 weekly frequency counts of operational errors and the volume of operations covering the periods from January 1980 to July 1982. The model used a linear autoregressive process, but the parameters were estimated using a derivative-free non-linear least squares estimation method. The post-strike operational error data normalized to the volume of operations were found to be lower than the same rate for the pre-strike period.
The analysis of operational errors of the Air Traffic Controllers reported during comparable periods before and after the strike date of August 3, 1981 showed that there was a lack of degradation of safety of the National Airspace System in the post-strike period. This was found to be true both for terminals and the air route traffic control centers.
Language: en |