AAR Corp. is an independent provider of aviation services to commercial and government customers worldwide. Headquartered in Wood Dale, Illinois, the company specializes in aftermarket support, including aircraft maintenance, repair, and overhaul (MRO), as well as parts distribution. AAR operates through four main segments: Parts Supply, Repair & Engineering, Integrated Solutions, and Expeditionary Services.
Sales to global government and defense customers (including U.S. government branches, agencies and departments) were $923.9 million, or 27.9% of consolidated sales, in fiscal 2026 (28.9% in fiscal 2025 and 29.4% in fiscal 2024); sales to U.S. government branches, agencies and departments and their contractors were $787.8 million, or 23.8% of consolidated sales. Sales to commercial customers (major airlines and related OEM suppliers) were $2,384.1 million, or 72.1% of consolidated sales, in fiscal 2026. The Government Solutions segment accounted for approximately 15% of fiscal 2026 sales; AAR is the prime contractor on the ten-year State Department INL/A WASS performance-based fleet-management contract (begun fiscal 2018). Government sales are subject to competitive bidding, government funding levels and worldwide geopolitical events.