In the latter period of 1981 , the first F-15J / DJ aircraft were sent to 202nd Tactical Fighter Squadron , which was reorganized as an Eagle FTU and renamed the 23 Flying Training Squadron at Nyutabaru base on 21 December 1982 . The JASDF developed a plan to form the first squadron after the KAL007 shootdown by a Soviet Su-15 on 1 September 1983 . In March 1984 , new F-15Js began replacing the 203rd Tactical Fighter Squadron 's F-104Js at Chitose Air Base , located across the La Pérouse Strait from the Soviet fighter base on Sakhalin Island
KAL007 shootdown
Korean Air Lines Flight 007
Mitsubishi F-15J