Русско-англо-русский юридический словарь

Long term rental of personal property (for periods longer than a year) is known as leasing. Leasing is usually used for high-value capital equipment, both in business and by consumers (particularly for cars). A leasing agreement which transfers most of the risks and rewards of ownership, usually for the life of the asset, is known as a finance lease. A leasing agreement which is not a finance lease is known as an operating lease. (Wikipedia)

A Leasing Agreement is an agreement where the lessor (owner of the aircraft) enters into a contract with the lessee (the person who leases the aircraft) for the use of the aircraft, for a consideration. (Mondaq)