Use of statistical reference method to improve flight safety

Abstract

Statistical comparison as a test of hypotheses about the coincidence of distribution parameters is considered. This allows defining whether the discrepancy in estimations of the distribution parameters of safety indicators is significant or can be justified by inessential changes in the conditions of the experiment-random drifts. Each adverse event is assigned a weight that reflects the probability that it can result in an adverse outcome in a particular flight. Risk (hazard) assessment is represented as a product of the mean value of weight n₀ of adverse event K_n and frequency of occurrence F_n of events during the period of time analysed.

First published online: 29 Jun 2012