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Making the most of aircraft spare parts management

2020-09-09 / 3 min
Locatory.com partners with Unical Aviation

A conventional inventory management plan is usually based on an implicit assumption that nothing goes wrong in the supply chain. However, it quite often does. For instance, supply chains are as vulnerable to natural disasters as any other areas of aviation business. In order to prevent or at least minimize the chance of possible malfunctions in a supply chain it might be worth to review the supply chain management procedures from the perspective of an insurance broker once in a while. Determining the exact spare parts-related needs of a particular carrier and/or MRO provider may not only optimise the speed of relevant processes, but also bring considerable cost savings.

Storing spare parts for airplanes serves as an insurance against costly downtime. Thus, carriers and their suppliers must try their best to determine the most adequate insurance coverage, i.e. ensure that the right amount of spares is always in the right place and at the right price. When managing such processes many companies tend to rely on the spare parts lists recommended by OEMs or spares’ providers. However, these lists are normally formed whilst taking into consideration the average failure characteristics of particular components and parts or, in the case of a repairable unit, the average repair time only. Unfortunately, the specialists producing these lists tend to overlook the economic impact to an airline having an aircraft out of service while waiting for a spare part to arrive.

“Despite the fact that commercial aviation heavily relies on the spare parts supply, most commercial airlines and MROs are still managing their supply chain processes ineffectively, which often results in stocking enormous levels of spare parts while, at the same time, experiencing costly delays and downtime,” says Zilvinas Sadauskas, the CEO of Locatory.com.

It has been recently revealed that even if an airline invests up to $100-200 million in a spare parts stock it can still be unable to cover every possible malfunction or need

It has been recently revealed that even if an airline invests up to $100-200 million in a spare parts stock it can still be unable to cover every possible malfunction or need. For example, according to a survey carried out by Oliver Wyman consultancy agency, in North America alone airlines spend $110 million on over-insured and poorly positioned spares. Moreover, there are up to $65 million in spares which are under-insured, while being highly critical to operations. The latter are often subject to long lead times or are in short supply for aircraft-on-ground situations causing many maintenance-related delays and cancellations.

“Airlines must carefully consider the number, type and price of the parts they are the most likely to be in need of, not to mention the place that these parts should be deployed. Then they must proceed with categorizing the components and spare parts based on how critical they are to the operation and estimate the possible or average costs of downtime. Thus, by streamlining and eliminating redundant inventory management and logistics processes, the internal cycle times can be reduced by more than 50% resulting in considerable financial savings,” shares Zilvinas Sadauskas. “But there will always be some factors that can complicate the situation and are immune to meticulous planning. For instance, some rotable parts may no longer be manufactured or are too expensive to rebuild.  Also, an earthquake or any other natural disaster may simply demolish your stock.”

According to the CEO of Locatory.com, a good point to start is to prioritize what it is you want to protect and where to focus your energy. In the case of rare parts, you can establish your own stock by buying available spares on the market and establishing a control team to ensure their reliability and operability. Having a few used aircraft for teardown at your disposal is another option. Moreover, if there is only one source of supply, an MRO or a carrier may consider investing in or acquiring that supplier to ensure viability: here, even investing in a competitor can be justified.

Without any doubt, sometimes planning is difficult, as some repairs are intermittent and variable. Meanwhile, many critical parts and components have long lead times and are expensive. You have to strike a balance between how many of those items you’re going to stock against the risk of not having them. In such cases, joint stocks or e-procurement systems become especially handy, as you don’t really have to buy too much, but can rely on a wide network of MROs and operators,” comments Zilvinas Sadauskas, the CEO of Locatory.com

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