About AAR CORP. AAR is an independent provider of aviation services to commercial and government customers in over 100 countries. Founded over 65 years ago to repair equipment rather than discard it, we are proud to provide sustainable and efficient solutions to commercial airlines, the U.S. government and its allies. We provide aftermarket expertise and award-winning Market Solutions, including Maintenance, Repair and Overhaul (MRO) Services, Parts Supply, Integrated Solutions and Mobility Systems, which can be integrated or leveraged separately to help our customers increase efficiency and reduce costs and waste. ® Our commitment to Doing It Right by our customers, employees, communities and the planet positively impacts the aviation ecosystem. 5