AAR Corp. provides products and services to commercial aviation, government, and defense markets in North America, Europe, Africa, Asia, and internationally. It operates through four segments: Parts Supply, Repair & Engineering, Integrated Solutions, and Expeditionary Services. The company leases and sells aircraft components and replacement parts; and designs, manufactures, and repairs transportation pallets. The company also provides airframe maintenance services, such as airframe inspection, painting services, line maintenance, airframe modifications, structural repairs, avionics service and installation, exterior, and interior refurbishment services; component repair services, including maintenance, repair, and overhaul services, engine and airframe accessories, and interior refurbishment; and engineering services, such as integration, certification and procurement. In addition, it develops aircraft components and parts; designs proprietary designated engineering representative repairs; and provides integrated software solutions comprising Trax, a cloud-based electronic enterprise resource platform, as well as a suite of paperless mobility apps for automating workflows. Further, the company engages in the fleet management and operation of customer-owned aircraft; provision of supply chain logistics services, such as material planning, sourcing, logistics, information and program management, and parts and component repair and overhaul services, as well as engineering, design, and system integration services for specialized command and control systems; and flight hour component inventory and repair services. Additionally, it offers containers and shelters for military and humanitarian tactical deployment activities; and shelters, such as stationary and vehicle-mounted applications. AAR Corp. was founded in 1951 and is headquartered in Wood Dale, Illinois.