the 99,500 lb (45,100 kg), 6,000 nmi Bombardier Global 6000 is the platform for the USAF Northrop Grumman E-11A Battlefield Airborne Communications Node, the radar-carrying ground-surveillance Raytheon Sentinel for the UK Royal Air Force, and Saab’s Globaleye AEW&C carrying its Erieye AESA radar as UK's Marshall ADG basis for Elint/Sigint for the United Arab Emirates; it is also the base for the proposed Saab AB Swordfish MPA and the USAF Lockheed Martin J-Stars Recap battlefield-surveillance program, while IAI's ELI-3360 MPA is based on the Global 5000;
The Bombardier Challenger 600 began as a proof-of-concept business aircraft design from American aircraft pioneer Bill Lear. The design was subsequently purchased by Canadair, the predecessor to Bombardier, in the late 1970s. Canadair further refined the design and certified the aircraft in 1980. The type really “took off,” so to speak, with the follow-on Challenger 601, introduced in 1983, which replaced its predecessor’s Avro Lycoming engines with modern General Electric CF43-1A turbofans designed for high-utilization commercial airline service.
One particular type of operating lease is the wet lease, in which the aircraft is leased together with its crew. Such leases are generally on a short-term basis to cover bursts in demand, such as the Hajj pilgrimage. Unlike a charter flight, a wet-leased aircraft operates as part of the leasing carrier's fleet and with that carrier's airline code, although it often retains the livery of its owner.