AerCap Holdings N.V. engages in the lease, financing, sale, and management of commercial flight equipment in the United States, China, and internationally. The company engages in aircraft asset management services, such as remarketing aircraft and engines for lease or sale; collecting rental and supplemental maintenance rent payments, monitoring aircraft maintenance, monitoring and enforcing contract compliance, and accepting delivery and redelivery of aircraft and engines; conducting ongoing lessee financial performance reviews. Its aircraft asset management services also include periodically inspecting the leased aircraft and engines; coordinating technical modifications to aircraft to meet new lessee requirements; conducting restructuring negotiations in connection with lease defaults; repossessing aircraft and engines; arranging and monitoring insurance coverage; registering and de-registering aircraft; arranging for aircraft and engine valuations; and providing market research services.