AAR CORP

AAR CORP is a leading independent provider of solutions to the global aviation aftermarket, incorporated in 1955. The company offers a broad line of products and services to commercial and government aerospace customers and operates globally in over 20 countries. During the fourth quarter of fiscal 2026, AAR changed its operating segment structure, resulting in four segments. The Parts Supply segment remains unchanged, primarily consisting of new parts distribution and sales of used serviceable material, including aircraft, engine, and airframe parts and components (USM). The Repair, Engineering, and Software segment primarily consists of maintenance, repair, and overhaul (MRO) of airframes (Airframe MRO), certain other components (Component MRO), and software platforms such as Trax, Aerostrat, Airvoyant, and Airinmar. The Government Solutions segment primarily consists of fleet management and operations of customer-owned aircraft, customized performance-based supply chain logistics programs supporting the U.S. Department of War (DoW), the U.S. Department of State (DoS), and foreign governments, as well as the engineering, design, integration, manufacture, and repair of pallets, shelters, and containers (Mobility Systems). The Legacy Commercial Programs segment consists of asset-heavy flight hour-based component pool and repair programs for commercial airlines and distribution of consumables and expendables inventory. During the fourth quarter of fiscal 2026, AAR announced its intention to exit the Legacy Commercial Programs business.