為掌握精確之設備購置／汰換時程，本研究綜合考量設備總成本、機場飛航安全、服務品質及財政收支等目標，應用動態規劃構建國際機場航站大廈出境多設施購置／汰換時程之決策模式。為反映各時程不同設備各項成本之變動，本研究依旅客量、設備可靠度及利用率，建立各設施之運轉、維護及延遲等成本函數。最後，以中正國際機場出境設施為實例分析，研究結果顯示機械類設備之維護成本隨可靠度降低而遞增之速度大於電子類，而作業時間較長之設備其故障延遲成本隨可靠度降低而遞增之速度大於作業時間較短者。當旅客量等於設備處理量，則報到及證照查驗櫃檯最佳使用年限分別為九年及八年，應用本研究構建之模式可降低機場營運成本，提升設施管理績效。

In this study we formulated a dynamic programming model to determine the optimal facility purchase and replacement scheduling by considering facility renewal costs, aviation safety, passenger service level, and airport finance. Then, we constructed various cost functions on facility depreciation, operation, maintenance and delay for different facilities at different time stages. Time-dependent passenger volume, reliability, and utilization are considered to reflect variation in those costs due to time accumulation. Moreover, this study uses CKS International Airport as an example to demonstrate the application of the model. The results show that maintenance cost for mechanical equipment increases in a higher rate than that for electronic equipments as equipment reliability decreases. Besides, equipments of longer operating time also incur higher delay costs than those of shorter operating time, as equipment reliability lowers. The optimal service life of check-in and immigration counters are shown to be 9 and 8 years, respectively, for the same passenger flows. This study provides the airport authority with the optimal strategic decisions on the purchase and replacement of various facilities in terms of quantities and timing.