دانلود رایگان مقاله بهینه سازی موجودی برای مشتری هواپیمایی در قرارداد بر اساس عملکرد

abstract

The supply of spare parts has a crucial role in the aviation sector, mainly due to the high costs of spare parts and to the strict availability requirements. In a stand-alone scenario, an airline owns the spare parts and manages the maintenance tasks by itself. A new trend consists of not owning the spare parts and delegate the maintenance tasks to an external company, taking advantage of a specific Performance Based Contract (PBC). The PBCs aim to reduce the ownership cost for the customer airline, while ensuring a target system performance. Spare parts become a variable cost for the customer airline and a business income for the maintenance supplier, which is commonly another airline. This paper proposes an innovative model, i.e. the PBC-METRIC, which supports the customer airline manager to minimize the spare parts supply cost, in compliance with the airline availability requirements and with respect to the PBC. In detail, the PBC-METRIC models a multi-echelon, multi-item, single-indenture, multi-transportation network, by an innovative two-steps algorithm, defining the PBC specifications as modelling variables and parameters. A case study on a European airline, with the role of customer in a PBC, illustrates the outcome of the model.

6. Conclusions

The paper supports decision-makers of the maintenance function to decrease capital investment and improve availability through submitting a PBC. This is a novel contribution to take as afirst example of modelling contractual requirements to fix performance and service level of both parties. In this case, the PBCMETRIC helps the customer airline to select among multiple transportation options, by identifying the more worthwhile items to keep in stock. This first result is a novel introduction in the METRIC literature as all the main contributions refers to a single organization where the multi-echelon structure and all its parameters are known. The paper shows how the METRIC approach can remain valid for a customer airline company of a PBC where the information on the maintenance network are partial and some details are hidden by contract specs.