Assessing the Operational Efficiency of the Airports Affiliated with the Airports of Thailand (AOT), a Thailand Public Company Limited Using Data Envelopment Analysis: A Slacks-Based Measure Approach

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Nisakorn Somsuk
Sutit Huangsuwan
Bandith Rattanata
Suraphan Jaima


The objectives of this research are: (1) to assess the comparative operational efficiency of the main processes in six airports: Suvarnabhumi, Don Mueang, Chiang Mai, Hat Yei, Phuket, and Mae Fah Luang-Chiang Rai Airports, operated by Airports of Thailand Public Company Limited--AOT in the fiscal year 2018; and (2) to propose guidelines for planning or adjusting operational strategies to improve efficiency.  By using the data envelopment analysis--DEA technique and Slacks-based Measure--SBM method, the performance and evaluated scores can be obtained by calculating the input and output slacks directly. This research focuses on three main processes linked together, namely the production, airside service, and landside service processes. In this research, there are four primary inputs (i.e. number of employees, runway size, aircraft apron, and passenger terminal size), three intermediate inputs/outputs (i.e. runway, terminal, and cargo capacities) and three final outputs (i.e. aircraft movement, passenger movement, freight and mail - exclude transit)), which the data used is secondary data obtained from AOT's annual report 2018. The findings of the study revealed that all six airports were efficient in the production process; only Suvarnabhumi Airport was efficient in airside service process; and three airports, including Suvarnabhumi, Hat Yai, and Mae Fah Luang-Chiang Rai Airports, were efficient in landside service process. Furthermore,, from the study of the input/output slacks, each airport will be able to know how  to adjust the strategy by enhancing the outputs more appropriately. This will   enable the s to operate efficiently in the future.


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