Dassault Falcon 20 The Dassault Falcon 20 is a French business jet and was the first of a family of business jets built by Dassault Aviation . Design and development . Marcel Dassault gave the go - ahead for production of an eight or ten seat executive jet or military liaison aircraft the Dassault - Breguet Mystère 20 in December 1961 . The Mystère 20 was a low - wing monoplane with two rear - mounted Pratt & Whitney JT12A - 8 engines . The prototype , registered F - WLKB , first flew on the 4 May 1963 at Bordeaux - Merignac . Under the influence of Pan American the aircraft was re - engined with two General Electric CF700 engines and some dimensions were increased . Pan American signed a contract to distribute the Mystère 20 in the western hemisphere and ordered 40 aircraft with options on 120 . The re - engined aircraft first flew on 10 July 1964 . The first production aircraft flew on 1 January 1965 and both French and American certification was awarded in June 1965 . On the 10th June 1965 , Jacqueline Auriol set the women ' s world record speed in the first Mystère 20 prototype , F - WLKB , with an average speed of 859 kilometers per hour over 1000 km . This prototype was used in the 1966 comedy , How to Steal a Million , starring Audrey Hepburn and Peter O ' Toole . The Deliveries began to the Pan American outfitting facility at Burbank Airport , California . In 1966 the company re - designated the American - delivered aircraft as the Fan Jet Falcon , this later became the Falcon 20 . Military orders from Australia and Canada were received . All non - American aircraft were fitted out before delivery at Bordeaux - Merignac . In 1967 Pan American Business Jets Division increased their firm orders to 160 aircraft . Some Falcon 20s powered by General Electric CF700 engines were reengined with Garrett TFE731 engines under AMD - BA Service Bulletin No . 731 . These aircraft were redesignated with a " - 5 " after the model number . Volpar , Inc . worked on a program to reengine Falcon 20s with the Pratt & Whitney Canada PW305 engines , but the program was abandoned before a FAA STC was awarded . FAA Supplemental Type Certificate SA5858SW , held by Dassault Falcon Jet allows the installation of underwing pylons on the Fan Jet Falcon , Fan Jet Falcon Series D and Fan Jet Falcon Series E . This modification is commonly used to modify Falcon 20s to operate as special mission aircraft with underwing stores . The improved Falcon 200 featured more advanced jet engines and other major improvements to increase range , capacity and comfort . The aircraft proved to be so popular that production did not end until 1988 , being superseded by more advanced developments of the Falcon family . The United States Coast Guard operates a model called the HU - 25 Guardian which is used as a high - speed spotter aircraft to locate shipwreck survivors and direct slower - moving aircraft and rescue vessels , and interdict aerial and shipborne drug trafficking . The Falcon 20G , HU - 25 and Falcon 200 were powered by Garrett ATF3 engines . A total of 473 Falcon 20s and 35 Falcon 200s were built by the time production ended in 1988 . Later developments of the Falcon 20 include the smaller Falcon 10 , the larger 30 - seat Falcon 30 ( not developed ) and Falcon 50 , an improved three - engined development . In 2012 , a Falcon 20 became the first civil jet to fly on 100 % biofuel when it performed a test flight for Canada ' s National Research Council .