Power to Spare — Worldwide® Better Solutions for Short- and Long-Term Leases. Willis Lease has earned an industry-wide reputation for service, innovation, technical support and in-depth knowledge of commercial aviation. Our core business is leasing commercial aircraft engines to airlines, OEMs and MROs — worldwide.Along with short- and long-term leasing, we have developed and implemented strategic engine pooling programs which provide pool members with attractive benefits. We provide innovative leasing solutions to our customers.With one of the largest and most diverse portfolios of engines in the aviation industry, we can meet a wide range of customer technical and operating requirements.Quick responses to AOG emergencies illustrate how our worldwide team of dedicated professionals responds 24/7. Our experience, knowledge and leadership in engine leasing gives our customers a competitive advantage with Power to Spare — Worldwide®.