The tri-jet Falcon 50 is a very substantial long-range upgrade based on the earlier twinjet
Mystere/Falcon 20 and 200 family.
The Dassault-Falcon 50 was developed for the long range trans-Atlantic and transcontinental flight sectors, a must for Private Jet Charters, using the Falcon 20 as the design basis. However, to meet the 6440 km (3,475nm) range requirement, significant changes mean that the Falcon 50 is for all intents and purposes an all new aircraft.
Key new features include three 3,700# Garrett TFE731 turbofans in place of the Falcon 20s two GE CF 700s, mounted on a new area-ruled tail section, plus a new supercritical wing of greater area than that on the 20 and 200. Falcon 20 components retained include the nose and fuselage cross section.