The V-22 Osprey was the first aircraft designed from the ground up to meet the needs of all four U.S. Armed services. In partnership with Bell Helicopter Textron, Boeing Helicopters built the revolutionary tiltrotor aircraft that takes off and lands vertically like a helicopter. Once airborne, its blades can be rotated to convert the aircraft to a turboprop airplane capable of high-speed, high-altitude flight. Boeing was assigned responsibility for the fuselage, all subsystems, digital avionics and fly-by-wire flight-control systems.