AAR CORP. NYSE: AIR is an aviation engineering company based in the United States. In 1951, AAR Founder, Ira Eichner began purchasing surplus military radios and equipment and selling them to the fledgling commercial aviation industry. Today, the company is headquartered in Wood Dale, Illinois, a Chicago suburb near O'Hare International Airport employing approximately 4,000 people in 40 facilities in 13 countries.

AAR is a diversified provider of products and value-added services to the worldwide aerospace and defense industry. AAR helps customers control costs and improve operations while ensuring the highest levels of quality, service and safety. AAR offers a wide range of products and aviation support services that includes proprietary inventory management and logistic support; maintenance, repair and overhaul of aircraft and aircraft components; aircraft sales and leasing; and manufacturing of aircraft parts and mobility systems.

The company supplies products and services to the aviation/aerospace industry (both civilian and military), including:

• aircraft and engine parts
• airframe maintenance, repair, and overhaul; MRO
• landing gears repair and overhaul
• wheels and brakes
• in-aircraft cargo loading systems and interior and exterior composite structures
• mobility products that include custom pallets, containers and shelters

AAR also sells and leases a wide variety of commercial aircraft and jet engines.