Japan’s Air Self-Defense Force has officially begun modernizing its F-2A fighter jets, equipping them with the cutting-edge AAM-5B short-range air-to-air missile. Until now, the missile was only fielded on Japan’s frontline F-15J Eagles, making this a significant leap forward for the F-2 fleet.
The upgrade was spotted during a routine training flight, where four F-2s were seen carrying the new missiles for the first time. The AAM-5B is a major improvement over the older AAM-5, featuring dual-frequency infrared guidance and a seeker with extended cooling duration—boosting accuracy, lock-on reliability, and overall combat effectiveness in high-intensity engagements.
Japan’s push to modernize the F-2 began back in 2011, with years of testing leading to this rollout. Beyond the new missile, the upgrade package also includes the TADIL J (Link-16) datalink system, integration of ASM-3A supersonic anti-ship missiles, and future readiness for the Type 12 SSM-ER long-range cruise missile, which is expected to enter service in 2027. In total, 31 F-2s will be upgraded under a five-year plan that kicked off in 2020.
This effort is part of a broader modernization program across Japan’s fighter fleet. The AAM-5B will also be fitted to upgraded F-15JSI (Japan Super Interceptor) fighters, alongside the AAM-4B medium-range radar-guided missile. To support this, Boeing secured a $129 million U.S. Department of Defense contract in 2024, directly contributing to the F-15JSI upgrade program.
These moves come at a time when Japan is expanding its defense capabilities in response to regional security challenges, particularly the growing air and naval power of neighboring countries. With the F-2 upgrades, Tokyo is making it clear that its fighters will remain modern, versatile, and combat-ready well into the 2030s.
