US Tests New AIM-424 Air-to-Air Missile With 465-Km-Plus Range: What It Means for China
The United States is developing and testing a new long-range air-to-air missile that could significantly extend the reach of its naval and Marine aviation forces.
The weapon, officially designated AIM-424 Long Range Air-to-Air Missile (LRAAM) and nicknamed “Malice,” has a publicly stated range of more than 250 nautical miles, or 463 kilometres. The US Navy says the missile is intended to strengthen fleet defence and provide greater range, survivability and tactical flexibility against advanced aerial threats.
The programme is particularly significant because the missile is being designed for fourth-, fifth- and sixth-generation aircraft. Publicly released information also shows AIM-424 associated with aircraft including the F-35C and F/A-18E/F Super Hornet.
While many details remain classified, the emergence of Malice highlights a broader shift in modern air warfare: the ability to detect and engage an opponent from increasingly long distances is becoming just as important as traditional close-range dogfighting.
What Is the AIM-424 Malice?
The AIM-424 is a Long Range Air-to-Air Missile (LRAAM) being developed by the US Department of the Navy.
According to the Navy's official fact sheet, its primary function is air-to-air combat, while its stated purpose is to improve fleet defence against advanced threats. The missile is being developed by Raytheon, a business of RTX.
The publicly disclosed specifications are substantial:
Range: More than 250 nautical miles (463 km)
Length: 13.5 feet (4.11 metres)
Diameter: 13.5 inches (0.34 metres)
Weight: 1,500 pounds (680.4 kg)
Propulsion: Solid-propellant rocket motor
Warhead: Blast fragmentation
Contractor: Raytheon
Designed platforms: Fourth-, fifth- and sixth-generation aircraft
The 463-km figure is the US Navy's published minimum range description. That does not mean the missile will necessarily achieve that distance against every target under every combat condition.
Actual engagement range depends on factors such as launch conditions, target altitude and speed, manoeuvring, guidance, sensing and electronic warfare.
Why Is America Developing Such a Long-Range Missile?
Modern air combat is moving further away from the classic image of fighter aircraft getting close enough for pilots to see one another.
Instead, advanced air forces increasingly rely on networks of aircraft, radar, satellites, data links and long-range weapons.
The basic objective is simple: find the threat first, engage it from farther away and reduce the chance of the launching aircraft being exposed to a counterattack.
The US Navy describes this concept as maintaining a “first look, first shot, first kill” advantage. AIM-424 is intended to provide greater reach and survivability while supporting fleet defence.
This becomes especially important in a heavily contested environment such as the Indo-Pacific, where aircraft may have to operate at long distances from their bases or carrier groups.
China Is a Major Part of the Strategic Background
Although the US Navy does not officially describe AIM-424 as a missile designed specifically to defeat China, the weapon's emergence comes amid an intense US-China competition over air and naval power.
China has invested heavily in long-range missiles, advanced fighters, radar systems and anti-access/area-denial capabilities.
For the US Navy, the challenge is not limited to enemy fighter aircraft.
High-value support aircraft—such as tankers and airborne early-warning platforms—are essential to sustaining air operations. If an opponent can threaten those aircraft from long distances, it can potentially reduce the effectiveness of an entire air operation.
A long-range air-to-air missile therefore has strategic value beyond simply shooting down another fighter.
AIM-424 and the F-35C
One of the most interesting aspects of the programme is its connection with the F-35C, the carrier-based version of the F-35 stealth fighter.
US Navy imagery has shown an AIM-424 mounted in an F-35C's internal weapons bay. Naval News also reported that the missile has been associated with testing involving the F/A-18E/F Super Hornet.
That combination could be important.
The F-35C is designed to operate with a reduced radar signature, while AIM-424 is designed to provide very long-range engagement capability. Carrying the missile internally can also help preserve the aircraft's stealth configuration.
The result is a potentially powerful combination of stealth, sensors and long-range weapons.
The Navy says LRAAM is being designed for current and future fourth-, fifth- and sixth-generation platforms, suggesting that the programme is intended to remain relevant beyond today's carrier air wing.
Is AIM-424 Already Operational?
No public evidence currently establishes AIM-424 as an operationally deployed weapon.
The US Navy says it is developing the missile, while Naval News reported that at least one captive-carry flight test had been disclosed and that additional integration activity had taken place in 2026.
Importantly, the Navy has said that specific capabilities and deployment timelines remain classified.
That means headlines suggesting the United States has already fielded a fully operational 463-km air-to-air missile should be treated cautiously.
Development and testing are important milestones, but they are not the same as full operational deployment.
How Different Is It From Existing US Missiles?
The AIM-424 is part of a broader US effort to expand long-range air-to-air capabilities.
The Navy already operates the AIM-174B, an air-launched configuration of the SM-6, while the US military is also developing other long-range air-to-air weapons.
AIM-424 appears to occupy a different part of this emerging weapons architecture, with its combination of very long range and compatibility with fighter aircraft.
Naval News reported that the missile's range and speed exceed those of the AIM-174B, while also noting that details surrounding the weapon remain limited.
The significance is therefore not simply one missile replacing another. The United States appears to be building a layered long-range air-combat capability, giving commanders different weapons for different targets and engagement scenarios.
Why the Missile's Size Matters
AIM-424 is a large weapon.
At approximately 680 kilograms, it is substantially heavier than many conventional fighter-launched air-to-air missiles. Its diameter is also 13.5 inches.
That size reflects the challenge of achieving very long range while retaining useful terminal performance.
The missile must carry propulsion, guidance and a warhead while travelling a considerable distance before reaching its target.
But there is a trade-off: larger missiles can affect aircraft payload, internal weapon-bay compatibility and mission flexibility.
That makes platform integration especially important.
What It Could Mean for the US Defence Industry
For investors, the AIM-424 story is also relevant because Raytheon is the contractor.
Raytheon is part of RTX, one of the world's largest aerospace and defence companies. The company's Advanced Technology division is developing the weapon, according to Raytheon and Naval News.
However, investors should not assume that the unveiling of a new weapon automatically translates into a large near-term revenue increase.
The commercial impact will depend on future procurement decisions, production quantities, contracts and deployment schedules.
The broader trend is more significant: governments are increasing investment in long-range precision weapons, advanced sensors, electronic warfare and next-generation combat aircraft.
That creates opportunities across the wider defence supply chain rather than for a single missile manufacturer alone.
What Happens Next?
Several developments could determine the importance of AIM-424.
Flight testing: Further tests should reveal how mature the programme is.
Aircraft integration: Compatibility with the F-35C, F/A-18 and future aircraft will be closely watched.
Procurement: Production contracts will provide a clearer picture of the programme's scale.
China's response: Any improvements to Chinese long-range missiles, aircraft or countermeasures could influence future US requirements.
Future sixth-generation fighters: Integration with future aircraft could determine whether AIM-424 becomes a central component of America's next-generation air-combat architecture.
The Bottom Line
The US Navy is developing and testing the AIM-424 Malice, a new long-range air-to-air missile with a publicly stated range of more than 463 kilometres. Its large size, long reach and planned compatibility with fourth-, fifth- and sixth-generation aircraft make it one of the more notable developments in America's air-combat arsenal.
But the weapon should not be described as an already operational “465-km killer missile.” Its development and deployment timelines remain classified, and the published range alone does not reveal its real combat effectiveness.
The larger message is clearer: the United States is investing heavily in the ability to detect, engage and defeat aerial threats from greater distances.
For the Indo-Pacific and the wider US-China military competition, that shift toward longer-range air combat could become increasingly important.
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This article is for informational and educational purposes only and should not be considered investment advice

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