JOINT REPLENISHMENT MODEL FOR AIRCRAFT SPARE PARTS

This research is conducted to develop an inventory policy of aircraft consumable spare parts which are needed for aircraft maintenance activity. In this research, we used a periodic review model to determine the optimal policy of aircraft spare parts inventory. By using the joint replenishment model, we find the optimal period of inventory review and order quantity. The optimal decision is determined based on the minimum total cost. We have classified consumable spare parts using ABC method to categorize them based on their dollar contribution and demand frequency. Therefore, in this research we focus on managing the inventory level for spare parts on class A. The result from this study shows that the proposed periodic review policy result in lower total inventory cost compared the company policy. The proposed policy gives an average saving 56.84%.