AIM-120 AMRAAM: How the Fox 3 Missile Hunts, Misses and Sometimes Strays

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The AIM-120 AMRAAM grew out of a lethal problem exposed in the ACEVAL-AIMVAL evaluations at Nellis Air Force Base from 1974 to 1978. F-14s and F-15s firing AIM-7 Sparrows had to keep their radars on the target, flying straight while F-5E aggressors with all-aspect Sidewinders closed in, producing a high rate of mutual kills. The 1,000-pound AIM-54 Phoenix could only fit the F-14. Under a memorandum of agreement, the U.S. developed the medium-range AMRAAM while European partners built a short-range missile that became the British ASRAAM. The AMRAAM flies its mid-course on inertial navigation and data link updates, then switches on its own small radar for the terminal phase.

The first official kill came in December 1992, when a U.S. Air Force F-16 downed an Iraqi MiG-25 with a missile marked defective 24 hours earlier. AMRAAMs destroyed six Serbian MiG-29s in Kosovo in 1999, and a Turkish F-16 hit a Syrian L-39 at 45 kilometers in 2020. Its overall probability of kill is about 0.59. In 1994, an AMRAAM and a Sidewinder fired by U.S. F-15s destroyed two U.S. Army Black Hawks over Iraq, killing everyone aboard. In September 2025, a Polish AMRAAM fired at a Russian drone lost its target and struck the roof of a house.

• The RAF's Tornado F3 skipped the mid-course data link, which made its AMRAAMs statistically worse than its older Skyflash missiles.
• Visual mode lets a pilot fire with no target data, and home-on-jam mode follows an enemy's jamming signal to its source.
• The AIM-120C's clipped fins let the F-22 carry six missiles in its internal bays.
• The ground-launched AMRAAM ER pairs the AMRAAM's guidance with an Evolved Sea Sparrow motor, adding 50 percent range and 70 percent altitude.
• China's PL-15 prompted the AIM-260 JATM, while the Pentagon keeps the AMRAAM as its capacity weapon.