The F-20 Tigershark (initially F-5G) was a privately funded light fighter, designed and manufactured by Northrop. Development began in 1975 as a development of the Northrop F-5E Tiger II, a new engine that significantly improves overall performance and a modern avionics including a powerful and flexible radar. Compared with the F-5E, F-20 is much faster, won on visual air-to-air capability and a full suite of air-ground modes, was able to accept several U.S. weapons. With these advanced capabilities of the F-20 competitive projects with modern American fighter aircraft like the F-16 Fighting Falcon, but was much less expensive to buy and operate.
Many of the F-20 development was carried out in a U. S. Department of Defense (DoD), known as Project “FX” to sell for less-advanced plans for militants to U.S. allies about the possibility of the first line of U.S. technology to reduce the hands of the Russians. FX has been a general re-export activities of U.S. military policy, developed under the Carter administration in 1977. Despite high expectations for the F-20 Northrop on the international market, changes in policy after the elections of Ronald Reagan, the F-20 sales to let the first row as competing Fighter F-16th The development plan has been abandoned in 1986, after three prototypes were built and partially past quarter.