On 6 September 1976 , Soviet Air Forces pilot Viktor Belenko successfully defected , landing his MiG-25 ' Foxbat ' at Hakodate Airport , Japan . During this incident , the Japan Self-Defense Forces ' ( JASDF ) radar lost track of the aircraft when Belenko flew his MiG-25 at a low altitude , prompting the JASDF to consider procurement of airborne early warning aircraft
defected
Defection of Viktor Belenko
Northrop Grumman E-2 Hawkeye