A dry lease is a leasing arrangement whereby an aircraft financing entity (lessor), such as GECAS, AerCap, or Air Lease Corporation, provides an aircraft without crew, ground staff, etc. Dry lease is typically used by leasing companies and banks, requiring the lessee to put the aircraft on its own air operator's certificate (AOC) and provide aircraft registration. A typical dry lease lasts upwards of two years and bears certain conditions with respect to depreciation, maintenance, insurances, etc., depending also on the geographical location, political circumstances, etc.