Armac Systems help airlines maximize spare parts availability at the lowest economic cost, enabling them improve technical dispatch reliability and reduce inventory costs. Standard inventory planning components within inventory management systems are not fit for purpose when it comes to MRO inventory planning. They are based upon a "Purchase to Consume" model within a manufacturing approach, where parts are purchased according to production planning and then consumed at the end of the process. Armac’s MRO inventory planning and optimization solution has been designed specifically to support the requirements of rotable, repairable and consumable inventory. Our solution is based upon the “Repair to Reuse” model which supports MRO specific inventory planning activities and decisions. The “Repair to Reuse” inventory planning model contains the analytical sophistication required to address the uncertainty of demand, scale and complexity surrounding MRO inventory, enabling airlines and MROs to target optimal float levels to deliver service level and investment KPIs.