NEED TO KNOW

• Iran's Majid short-range air-defense system uses infrared heat-seeking guidance — bypassing the F-35's radar warning systems entirely
• The system triggered no alert in the cockpit; the aircraft's electronic countermeasures were useless against a passive optical seeker
• If confirmed as the weapon behind Friday's F-15E shoot-down, it marks the second U.S. combat aircraft felled by Iranian passive infrared defenses in five weeks

RANDALLSTOWN, MD (TDR) — Iran's Majid air-defense system — a short-range, infrared-guided missile that emits no radar signal — is emerging as the most consequential weapons development of Operation Epic Fury, threatening to rewrite how the U.S. military plans and executes strikes in contested airspace.

The big picture: The Majid exploits a specific gap: fifth-generation fighters like the F-35 were built to defeat radar-guided threats. Passive infrared is a different problem.

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• The Majid, also designated AD-08, detects engine heat rather than bouncing radar waves off a target
• Because it emits no active signal, it triggers no alert on the F-35's Radar Warning Receivers — the system pilots rely on to detect incoming threats
• Iranian infrared-guided systems had already destroyed more than 16 MQ-9 Reaper drones before the first manned aircraft engagement

Why it matters: The Majid's effectiveness doesn't just threaten U.S. operations over Iran — it hands a tactical blueprint to every adversary watching this war.

• More than 20 allied air forces operate or have ordered F-35s; each is now reconsidering operational assumptions
• China, Russia, and other state actors are almost certainly analyzing Iranian footage and engagement data in real time
• The system is road-mobile and concealable; SEAD operations cannot reliably neutralize it before strike missions

Driving the news: The March 19 F-35 engagement established the Majid's combat record. Friday's F-15E shoot-down suggests Iran has deployed it at scale.

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• On March 19, an F-35A was struck by what multiple analysts identified as a Majid missile; the pilot suffered shrapnel wounds but landed safely
• Iranian footage released at the time showed a single missile launched and striking the aircraft — consistent with an infrared point-defense system
• Friday's F-15E, confirmed downed by U.S. officials, went down over similar central Iranian terrain; the IRGC again cited a "new, advanced air-defense system"
• CENTCOM Commander Adm. Brad Cooper said Thursday that Iranian "air and missile defense systems have largely been destroyed" — hours before a confirmed shoot-down

What they're saying: Defense analysts are split — not on whether the system works, but on what it means.

• Ali Vaez, director of the Iran Project at the International Crisis Group: "This would be significant — not because stealth is becoming obsolete, but because it shows even an F-35 is not invulnerable in a dense, adaptive air-defense environment."
• Defense analyst Sebastien Roblin, writing for 19FortyFive, noted the F-35 does carry an infrared missile approach warning system — but called the incident a pivotal "reality check" for the perception of fifth-generation invulnerability
• A Russian defense analyst attributed the March 19 hit to Iran's S-300PMU-2 systems from Moscow — a competing theory that, if true, shifts the strategic implications considerably

Yes, but: The Majid is a short-range point-defense system with an engagement ceiling of roughly six kilometers — not a long-range area denial weapon. The conditions that made these shoot-downs possible reflect specific U.S. tactical choices, not a collapse of stealth doctrine overall.

• Both confirmed aircraft engagements involved low-altitude flight over heavily defended Iranian territory — a posture retired Col. Jeffrey Fischer called "pretty low and pretty slow flying" that limits a pilot's defensive options
• The F-35's distributed aperture system is specifically designed to detect non-radar threats; the March 19 engagement raises questions about whether it performed as intended
• Serbia downed an F-117 over Yugoslavia in 1999 with a dated Soviet S-125; that incident prompted adaptation, not doctrine collapse

Between the lines: The U.S. has not publicly named the Majid or acknowledged a specific Iranian capability — and that silence is doing work. Officially confirming that a passive infrared system defeated the F-35's defenses would require a public accounting of the $1.7 trillion program's most fundamental vulnerability.

• A formal U.S. acknowledgment would reshape alliance politics and procurement decisions across NATO and the Indo-Pacific
• The IRGC's release of engagement footage before damage was confirmed signals that Iran views the information value as equal to the military value

What's next:

• CENTCOM has not confirmed the weapon system used in Friday's F-15E shoot-down
• Congressional defense committees are expected to seek classified briefings on F-35 infrared vulnerability
• The Pentagon faces pressure to clarify the status of the F-35's AN/AAQ-37 passive warning system following the March 19 engagement
• F-35 partner nations may request updated threat assessments from the Pentagon

If a road-mobile, passively guided missile costing a fraction of an F-35 can defeat the world's most expensive fighter program — how much of U.S. air dominance doctrine was built on an assumption that adversaries would always fight the way radar-based defenses assumed?

Sources

This report was compiled using information from Military Watch Magazine, 19FortyFive, Al Jazeera, Defence Security Asia, Breaking Defense, and CBS News.

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