on Oct. 10, 1984, the first prototype (serial 82-0062, c/n GG1001, registered N4416T) of the Northrop F-20 Tigershark crashed at Suwon Airbase, South Korea, killing Northrop pilot Darrell Cornell.
The following investigation cleared the F-20 of mechanical or design issues
since it concluded that Cornell had blacked out due to excessive g-forces.
Nevertheless, the second prototype of the F-20 (serial number 82-0063, registered N3986B, c/n GI1001) crashed in May 1985 at Goose Bay, Labrador, killing Northrop pilot Dave Barnes, while he was practicing for the Paris Air Show.
Again the crash was blamed on G-LOC.
The F-20 Tigershark was a privately financed light fighter, designed and built by Northrop.
The aircraft was a further evolution of Northrop’s F-5E Tiger II
It was powered by a new engine that greatly improved overall performance and a modern avionics suite that included a powerful and flexible radar.
Compared with the F-5E, the F-20 was much faster, gained beyond-visual-range (BVR) air-to-air capability, and had a full suite of air-to-ground modes capable of firing most U.S. weapons.
Thanks to these improvements, the F-20 became competitive with contemporary fighter designs such as the General Dynamics F-16 Fighting Falcon but was much less expensive to purchase and operate.
The F-20 Tigershark program was abandoned in 1986 after three prototypes had been built and a fourth partially completed.