Aircraft leases are often used by private aircraft operators, as leases provide the same level of access to an aircraft that ownership provides, without the capital expenditure buying a business jet requires. Leases are offered in two main forms: wet leasing, normally used for short-term access; and dry leasing, typically used for longer term leases. Under wet leases, flight crews are provided in tandem with the aircraft, while operators of dry leased aircraft supply their own crews. Combination wet-dry leases may also be offered, as when an aircraft is wet leased to establish service, and once an in-house flight crew is trained, switched to a dry lease.
The forward wing sweep, 20,280 pounds (9.20 t) MOTW Hamburger Flugzeugbau HFB 320 Hansa Jet first flew on 21 April 1964, powered by two General Electric CJ610, 47 were built between 1965 and 1973. The joint Piaggo-Douglas, 18,000 pounds (8.2 t) MOTW Piaggio PD.808 first flew on 29 August 1964, powered by two Armstrong Siddeley Vipers, 24 were built for the Italian Air Force.