It might be old but it can still fight.
The F-15A was eventually replaced in production by the F-15C, which included a newer AN/APG-70 synthetic aperture radar and newer F100-PW-220 engines. The latest program, nicknamed Golden Eagle, stress tests F-15Cs for wear and tear, and 178 of the planes in the best physical condition with the least receive new APG-63V3 active electronically scanned array radars and the Joint Helmet Mounted Cuing System, allowing rapid target acquisition with infrared guided missiles.
For nearly three decades, the F-15 Eagle fighter was considered the undisputed king of the skies. Until the debut of its replacement, the F-22 Raptor, the F-15 was the U.S. Air Force’s frontline air superiority fighter. Even today, a modernized Eagle is still considered a formidable opponent, and manufacturer Boeing has proposed updated versions that could keep the airframe flying for the better part of a century.
The F-15 traces its roots to the air war in Vietnam, and the inauspicious showing of American Air Force and Navy fighters versus their North Korean counterparts. Large, powerful American fighters, designed to tackle both air-to-air and air-to-ground missions, were performing poorly against their smaller, less powerful—but more maneuverable—North Vietnamese counterparts. The 13:1 kill ratio American fliers enjoyed in the Korean War dropped to an abysmal 1.5 to 1 kill ratio in Vietnam.
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