Hey, buddy, got any spare Pratt & Whitneys? Willis Lease Finance buys and sells aircraft engines that it leases to commercial airlines, air cargo carriers, and maintenance/repair/overhaul organizations in some 30 countries. Its portfolio includes about 200 aircraft engines and related equipment made by Pratt & Whitney, Rolls-Royce, CFMI, GE Aviation, and International Aero. The engine models in the company's portfolio are used on popular Airbus and Boeing aircraft. The Willis Lease portfolio also includes four de Havilland DHC-8 commuter aircraft. Customers include Island Air, Alaska Airlines, American Airlines, and Southwest Airlines. Almost 80% of the company's engines are leased and operated outside the US.