Abstract

Abstract The relation between descriptive information of runway surface conditions and the braking performance of commercial airplanes was investigated at two Norwegian airports during the winter seasons 2008/2009 and 2009/2010. Of the 24,928 analyzed landings, 885 landings (3.6%) took place where the airplane stopping capability was limited by the frictional conditions on the runway. For these landings the airplane braking coefficient ( μ B ) was determined using the Boeing Airplane Braking Performance Model. The average μ B was clearly sensitive to the reported type and spatial coverage of contamination; however there exists a large variability between individual landings on the same reported conditions. To a lesser extent, the average μ B was sensitive to the amount of precipitation accumulated since the last runway inspection/snow clearing. The results of this study are relevant for ongoing initiatives to interpret descriptive information on runway surface condition in a scale ranging from “poor” to “good”.

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