Service quality robust design – with a case study in airport services

This paper shows how the Taguchi's robust design can be developed to design the best levels of service quality dimensions. For this purpose, Taguchi's experimental design and signal‐to‐noise ratio (S/N ratio) have been examined in the Isfahan International Airport services and the results have been analysed by Minitab software. About 13 dimensions of service quality have been assumed as control factors and the average passenger satisfaction has been assumed as response. Twenty‐seven experiments have been designed for estimating the amount of passenger's satisfaction and after collection and analysis of data, appropriate levels of service quality have been determined. The S/N ratios calculated highlight the 14th experiment as the best one. The value of passenger satisfaction in access‐level B, i.e. fitness of variety services to passenger's requirements in different hours a day, is found as higher than other dimensions. Also, information about changes in services is found as the highest value of dissatisfaction.