AAR Corp. (‘AAR’), together with its subsidiaries, offers a broad line of products and services to commercial and government aerospace customers.
The company operates globally in over 20 countries through four business segments: Parts Supply, Repair & Engineering, Integrated Solutions, and Expeditionary Services.
In fiscal 2025, the company continued its efforts to optimize its products and services portfolio to position itself for continued strong growth, as well as to respond to the industry...
AAR Corp. (‘AAR’), together with its subsidiaries, offers a broad line of products and services to commercial and government aerospace customers.
The company operates globally in over 20 countries through four business segments: Parts Supply, Repair & Engineering, Integrated Solutions, and Expeditionary Services.
In fiscal 2025, the company continued its efforts to optimize its products and services portfolio to position itself for continued strong growth, as well as to respond to the industry’s increased demand for aftermarket services. Double-digit sales growth in the company’s new parts distribution activities was a key contributor to improvements in profitability.
The company also continued its integration of its fiscal 2024 Product Support acquisition and has realized significant synergies, while its broader Component Services activities have benefited from these additional capabilities, expanded global footprint, and higher-margin offerings brought through the acquisition.
As part of the company’s portfolio optimization efforts, it divested its Landing Gear Overhaul (‘LGO’) business to better focus on its core segments and highest-margin offerings. In the company’s Airframe MRO activities, digital advancements have driven efficiencies contributing to significant profitability improvement, and it continues to make progress toward additional maintenance capacity through the construction of two Airframe MRO facility expansions, one in Miami, Florida, and one in Oklahoma City, Oklahoma.
Business Segments
Parts Supply
The company’s Parts Supply segment primarily consists of sales and leasing of USM and aftermarket distribution of new, original equipment manufacturers (‘OEM’) supplied replacement parts. The Parts Supply segment accounted for approximately 40% of the company’s sales in fiscal 2025. The company has established formal distribution relationships with OEM suppliers of aircraft components, which are utilized by aircraft operators and aircraft repair and maintenance operations. The company is a leading independent distributor of factory-new aircraft parts for the aftermarket. As it continues to enhance its digital solutions, the company has developed the online PAARTSsm Store, which facilitates the electronic fulfillment of orders when customers choose this channel.
USM is an important category of the aviation aftermarket in which parts removed from engines or airframes can be refurbished to be utilized as replacement parts in the aftermarket. The company utilizes a network of third-party repair facilities to perform this work. Used serviceable material (‘USM’) parts often represent a cost-effective and more timely solution for operators when compared to sourcing new parts.
The company takes an active role in sourcing USM inventory by monitoring the market for opportunities to acquire used aircraft and engines. After acquisition, it manages the process of disassembly, repair, and inspection of the various parts or discreet components that can be sold to customers. The company’s extensive network of industry relationships and presence in the market positions it with operators, lessors, and other trading companies to source opportunities. Additionally, the company’s global reach and long-standing customer relationships position it to meet market demand for these products.
The company also distributes new OEM-supplied replacement parts to aircraft operators, airlines, government customers, and other maintenance, repair, and overhaul (‘MRO’) companies across the world. The company’s parts are supplied to narrow-body, wide-body, and regional aircraft. In most cases, it enters exclusive relationships with OEM manufacturers for a given market where it is the only provider of that supplier’s product category. The company provides global scale, independence, and highly technical sales capabilities across both commercial and government end-markets.
The company is an authorized distributor for more than 30 product lines, which include parts from over 300 Federal Supply Class codes sourced from over 20 leading OEMs. It also has an interest in a joint venture supporting the distribution of OEM parts to customers in Asia.
The company’s business activities in this segment are primarily conducted through AAR Supply Chain, Inc.; AAR Aircraft & Engine Sales & Leasing, Inc.; and AAR International, Inc.
Repair & Engineering
The company’s Repair & Engineering segment primarily provides airframe maintenance and component repair services.
The company’s airframe maintenance services primarily consist of major airframe inspection, MRO, painting services, line maintenance, airframe modifications, structural repairs, avionics service and installation, exterior and interior refurbishment, and engineering services and support for many types of commercial and military aircraft.
The company’s Repair & Engineering segment also develops Parts Manufacturer Approval (‘PMA’) parts for aftermarket applications. PMA is a designation under Federal Aviation Administration (‘FAA’) regulations that permits the design of approved parts for specific aircraft components that can be provided by non-OEM sources at cost-efficient and sometimes improved availability. In addition, this segment also designs proprietary designated engineering representative (‘DER’) repairs.
The company’s Repair & Engineering business primarily supports narrow-body Airbus, Boeing, and Embraer regional aircraft for customers, as well as U.S. government defense agencies.
The company operates six airframe maintenance facilities and six component repair facilities. The company’s U.S. airframe maintenance facilities are in Indianapolis, Indiana; Oklahoma City, Oklahoma; Miami, Florida; and Rockford, Illinois; and its Canadian airframe maintenance facilities are in Trois Rivières, Quebec, and Windsor, Ontario. The company’s component repair facilities are in Hot Springs, Arkansas; Grand Prairie, Texas; Wellington, Kansas; Chonburi, Thailand; Garden City, New York; and Amsterdam, the Netherlands. In conjunction with the integration of the recently acquired Product Support business, the company is consolidating its facility footprint, which includes closing its Garden City, New York facility. The company expects to complete the transition of the facility’s operations to other component repair facilities in fiscal 2026.
The company is expanding both its Miami and Oklahoma City airframe maintenance facilities to meet growing customer demand. In Miami, it is constructing a 114,000 square foot facility with three bays adjacent to its existing hangar. In Oklahoma City, it is constructing an 80,000 square foot facility with three bays and warehouse space adjacent to the company’s existing hangar. Both facilities are expected to be complete and operational in the next 12-18 months, with the Oklahoma City expansion slightly ahead of schedule, and the Miami expansion slightly behind due to some permitting delays.
In addition to the company’s North American airframe maintenance facilities, it also has an interest in a joint venture that operates an airframe maintenance facility in India.
The company’s business activities in this segment are primarily conducted through AAR Aircraft Services, Inc.; AAR Allen Services, Inc.; AAR International, Inc.; AAR Component Services (Thailand) Ltd.; AAR Component Services – Hot Springs, LLC; and AAR Component Services – Grand Prairie, Inc.
Integrated Solutions
The company’s Integrated Solutions segment primarily consists of its fleet management and operations of customer-owned aircraft, customized performance-based supply chain logistics programs in support of the U.S. Department of Defense (‘DoD’) and foreign governments, flight hour component inventory and repair programs for commercial airlines, and integrated software solutions, including Trax.
The company is the prime contractor on this ten-year performance-based contract which began in fiscal 2018. The company’s services under the contract include operating and maintaining the global DoS fleet of fixed- and rotary-wing aircraft.
Supply chain logistics programs primarily consist of material planning, sourcing, logistics, information and program management, and parts and component repair and overhaul. Flight hour component inventory and repair programs for commercial airlines primarily consist of outsourcing programs for airframe parts and components, including warranty claim management in support of its airline customers’ maintenance activities.
The company’s integrated software solutions primarily consist of its Trax software, which it acquired in fiscal 2023. Trax has the first fully cloud-based electronic enterprise resource platform for the MRO industry and also offers a full suite of ‘paperless’ mobility apps that are in the process of automating MRO workflows with artificial intelligence. Through Trax, the company is a leading provider of maintenance software for airlines, other aircraft operators, and MROs. Through its eMRO and eMobility products, Trax provides comprehensive software solutions for aircraft maintenance designed to increase efficiency, improve asset utilization, streamline the information flow among interested parties during the maintenance process, and create the required regulatory system of record required by airline and lessor customers.
The company’s business activities in this segment are primarily conducted through AAR Supply Chain, Inc.; AAR Government Services, Inc.; AAR Aircraft Services, Inc.; AAR International, Inc.; Trax USA CORP.; and AAR Airlift Group, Inc.
Expeditionary Services
The Expeditionary Services segment primarily consists of products and services supporting the movement of equipment and personnel by the U.S. and foreign governments, and non-governmental organizations.
The company designs, manufactures, and repairs transportation pallets and a wide variety of containers and shelters used in support of military and humanitarian tactical deployment activities. The containers and shelters are used in numerous mission requirements, including armories, supply and parts storage, refrigeration systems, tactical operation centers, briefing rooms, laundry and kitchen facilities, water treatment, and sleeping quarters. Shelters include both stationary and vehicle-mounted applications. The company also provides engineering, design, and system integration services for specialized command and control systems.
The company’s business activities in this segment are primarily conducted through AAR Manufacturing, Inc. and Brown International Corporation.
Customers
The principal customers for the company’s products and services are domestic and foreign passenger airlines, domestic and foreign cargo airlines, regional and commuter airlines, business and general aviation operators, OEMs, aircraft leasing companies, aftermarket aviation support companies, the U.S. Department of Defense (‘DoD’) and its contractors, the U.S. Department of State (‘DoS’), and foreign military organizations or governments.
Sales of aviation products and services to the company’s commercial airline customers are generally affected by such factors as the number, type, and average age of aircraft in service, the levels of aircraft utilization (e.g., frequency of schedules, flying hours, and take-off and landing cycles), the number of airline operators, the general economy, and the level of sales of new and used aircraft. Sales to the DoD and other government agencies are subject to a number of factors, including the level of troop deployment worldwide, government funding, competitive bidding, and requirements generated by worldwide geopolitical events.
The company primarily markets and sells products and services through its own employees. In certain markets outside of the United States, it relies on foreign sales representatives to assist in the sale of its products and services.
Government Regulation and Certificates
The company has twelve Federal Aviation Administration (‘FAA’) certificated repair stations across the United States, Canada, Asia, and Europe. Of the twelve FAA certificated repair stations, ten are also European Aviation Safety Agency (‘EASA’) and three are also Transport Canada Civil Aviation (‘TCCA’) certificated repair stations. Such certificates, which are ongoing in duration, are required for the company to perform authorized maintenance, repair, and overhaul services for its customers, and are subject to revocation by the government for non-compliance with applicable regulations. All of the certificated repair stations are within the Repair & Engineering segment.
History
AAR Corp. was founded in 1951. The company was incorporated in 1955.