Willis Lease Finance Corporation engages in acquiring and leasing commercial aircraft, aircraft engines, and related aircraft equipment for air carriers, manufacturers, and overhaul/repair facilities worldwide. The company operates through two segments, Leasing and Related Operations, and Spare Parts Sales. It is also involved in the purchase and resale of commercial aircraft engines and other aircraft equipment; and after-market engine parts, whole engines, engine modules, and portable aircraft components, as well as in the engine management and consulting business. As of March 31, 2020, the company had an operating lease portfolio of 260 engines, 10 aircraft, 10 other leased parts and equipment, and one marine vessel; and managed 451 engines, aircraft, and related equipment on behalf of other parties. Willis Lease Finance Corporation was founded in 1985 and is headquartered in Coconut Creek, Florida.