How a Chinese Engineer’s Viral Tutorial May Have Helped Iran Damage America’s “Untouchable” F-35
A low-cost asymmetric playbook — shared on Chinese social media and subtitled in Persian — exposes a new vulnerability in U.S. air…
Air Defence
How a Chinese Engineer’s Viral Tutorial May Have Helped Iran Damage America’s “Untouchable” F-35
A low-cost asymmetric playbook — shared on Chinese social media and subtitled in Persian — exposes a new vulnerability in U.S. air supremacy just days before Iran’s first reported kinetic engagement with the stealth fighter.
Screenshot from unverified Iran video of F-35 interception. Source: Tasnim News
On 19 March 2026, the perceived invincibility of the F-35 Lightning II was challenged when a US variant was damaged by ground fire over central Iran. The background to this includes a ‘training video’ on how to take down an F-35.
The F-35 interception over Iran
US CENTCOM spokesperson Navy Captain Tim Hawkins confirmed that an F-35A was forced to conduct an emergency landing at a regional airbase after being struck by ground fire during a combat mission over Iran. Hawkins stated that the aircraft landed safely and the pilot was in a stable condition, though he declined to provide specifics on the extent of the airframe damage.
This followed a report by CNN citing sources familiar with the event, which identified the event as the first time an Iranian kinetic strike had successfully impacted a fifth-generation American fighter.
The event surprised many analysts and probably gave a severe jolt to the USAF hierarchy as well as the Pentagon. The myth of F35 stealth had been challenged and found wanting.
But we all know we can visibly see a stealth airplane. Visual ‘cloaking’ has not yet been developed, although attempts are under way. You just need to have a means of hitting it, a missile with sensors that cannot be fooled. Or a gun if it is close enough.
It is believed that the F-35 was hit by shrapnel from an Iranian passive IR missile, possibly a Mach 5 R-27T / R-27ET Vympel Soviet-era medium-to-long-range missile. The missile might have been linked to a “tripwire” network that used passive sensors to guide it into the F-35’s vulnerable rear aspect (if comms with the missile were not jammed).
The unverified video released by Iran, which purports to show the interception:
[embed]
The F-35 takedown training video
The release of a civilian-created video tutorial on Chinese social media is a significant development in modern asymmetric warfare. This video, which provides specific instructions on how to combat the F-35 Lightning II, has broken through original language and geographic boundaries and gone viral.
By appearing with Persian subtitles and circulating within Iranian military and civilian circles, the content demonstrates how open-source intelligence and civilian expertise now challenge established military output.
A non-state actor provides a strategic roadmap for neutralising one of the most expensive and advanced weapons systems in history.
I have included a link to the video at the end of this story, together with a translation.
The viral rise of a civilian military advisor
The phenomenon began when an engineer, operating outside the formal military-industrial complex of the People’s Republic of China, uploaded a detailed analysis of the F-35’s operational weaknesses.
Unlike traditional state-sponsored propaganda, this content utilised high-fidelity simulations and deep technical knowledge of radar physics. The creator did not rely on classified leaks but rather on the synthesis of publicly available technical manuals, academic papers on stealth technology, and flight performance data.
This transition from “netizen” to “civilian military advisor” illustrates the democratisation of high-level strategic thought.
The speed at which this information moved from Chinese platforms like Bilibili and Douyin to Iranian telegram channels demonstrates the globalised nature of modern conflict.
The addition of Persian subtitles was a deliberate act of cross-border knowledge sharing, effectively exporting a tactical doctrine without the formal involvement of a government.
This “viral” advisory role presents a challenge to intelligence agencies, as the source of the threat is not a structured military unit but a distributed network of technically proficient individuals.
Historically, military secrets were guarded by physical security and state apparatuses. However, in an era where computational power and data are ubiquitous, a single motivated professional can produce insights that rival state-level intelligence briefings.
The engineer in question utilised 3D modeling software to demonstrate the “radar cross-section” (RCS) of the F-35 from various angles, showing that while the aircraft is nearly invisible from the front, it possesses specific vulnerabilities when viewed from certain lateral or rear-facing perspectives.
Inside the low-cost tactics against stealth technology
The core of the tutorial focuses on the “low-cost” aspect of countering a fifth-generation fighter that costs about $80-100 million per unit, depending on variant. The F-35 relies on its stealth, or Low Observability (LO), to survive in contested environments. As I mentioned earlier, you cans see one, and LO in this context means using radar.
The civilian video guide suggests that expensive, high-end surface-to-air missile (SAM) systems like the S-400 are not the only solution. Instead, it proposes a “system of systems” approach using older, modified technology and passive detection methods.
Old radars
One primary tactic discussed is the use of VHF (Very High Frequency) and UHF (Ultra High Frequency) radar arrays. Stealth aircraft are designed primarily to evade X-band radars, which are used for fire control.
Long-wavelength radars, however, can often detect the physical presence of a stealth airframe due to the phenomenon of resonance. When the size of an aircraft component, such as a tail fin, matches the wavelength of the radar, the radar return increases significantly. The tutorial details how Iran could network its existing Rezonans-NE radar stations with mobile passive detection sensors to create a “tripwire” effect.
Data links
Furthermore, the guide explores the vulnerability of the F-35’s data links. The aircraft depends heavily on the Multifunction Advanced Data Link (MADL) to share information with other units.
The tutorial suggests that by using ground-based electronic warfare (EW) stations to flood specific frequencies, an adversary can “blind” the aircraft’s networked capabilities, forcing it to operate in a legacy mode that increases its visibility.
Engine heat
The engineer also highlights the “heat signature” of the F135 engine. Despite the cooling measures implemented by Lockheed Martin, the engine produces over 43,000 pounds of thrust, generating immense thermal energy.
Passive Infrared Search and Track (IRST) systems, which do not emit signals themselves, can detect this heat at ranges exceeding 50 kilometres, providing a silent way to track the fighter without alerting its pilot.
Of course if the pilot becomes aware of the missile then decoy flares or shrapnel can be deployed and physical evasion manouevres such as the Split-S or Herbst exercised to avoid interception as a last resort.
F-35 takedown training video screenshot. Youtube.
Why the tutorial’s timing feels prophetic
The availability of this guide coincides with a period of extreme tension in the Middle East and the South China Sea. As Iran faces continuous pressure from US and Israeli forces equipped with F-35s, the need for a viable counter-strategy has moved from the theoretical to the practical.
The “prophetic” nature of the video lies in its anticipation of a conflict where traditional air superiority is no longer guaranteed by technological spending alone.
In 2024 and 2025, several incidents involving drone incursions and sophisticated jamming near Western airbases suggested that asymmetric tactics were already being tested.
The Chinese civilian engineer’s guide provides the intellectual framework for these actions. By focusing on the “OODA loop” (Observe, Orient, Decide, Act), the tutorial argues that an adversary does not need to shoot down an F-35 to defeat it.
If the aircraft can be forced to abort its mission through electronic interference or the threat of detection, the mission is a failure for the high-cost actor.
‘Mission kill’ does not need a plane crash.
And the mere threat itself can reduce sortie frequencies.
The timing also reflects the maturation of Chinese “civil-military fusion.” While the creator is a civilian, the cultural and educational environment in China encourages the application of private sector expertise to national security challenges. This is not unlike Ukraine, where that model has worked outstandingly well.
This alignment of civilian hobbyists with national strategic goals creates a bottom-up approach to warfare that Western militaries, with their rigid procurement and secrecy protocols, find difficult to mirror.
Netizen reactions and the power of open-source strategy
The reaction within the Chinese digital sphere was one of intense pride and analytical rigour. Thousands of comments under the original video discussed the nuances of “bistatic radar” and the “Bragg scattering” effect.
This level of public engagement with advanced military engineering suggests a high degree of technical literacy among the people. Users did not merely consume the content; they peer-reviewed it, offering corrections and additional data points.
This collective intelligence represents the power of “open-source strategy.” In the past, a nation’s military doctrine was a closely guarded secret. Today, it is being crowdsourced.
The “netizens” involved in these discussions often include former aerospace employees, students of physics, and software developers. When this group focuses on a single problem — such as “how to find an F-35” — the result is a rapid iteration of ideas that can outpace formal government research cycles.
In Iran, the reception was equally significant. The Persian-subtitled version was viewed as a practical manual for “resistance.” It reinforced a narrative that Western technology is not invincible and that “cleverness” can overcome “capital.”
This psychological impact is as important as the technical one. By demystifying the F-35, the tutorial lowers the barrier to entry for conflict, making potential adversaries more confident in their ability to contest air space.
What this means for US-China rivalry and future conflicts
The “F-35 Tutorial” foretells a new era of “Cognitive Warfare.” The US-China rivalry is often assessed in terms of hull counts and missile ranges, but this event suggests the real battlefield may be the control and dissemination of tactical knowledge.
If a civilian can effectively teach a foreign military how to counter a premier US weapon, the traditional “offset” strategy — where the US maintains a technological edge to compensate for smaller numbers — is in jeopardy.
Future conflicts will likely see a surge in “grey zone” activities where civilian experts play a primary role. We may see “digital volunteer” groups providing real-time analysis of satellite imagery or signal data to active combatants.
The distinction between a combatant and a civilian becomes blurred when a person with a laptop can provide the coordinates or the frequency settings necessary to neutralise a multi-million-pound asset.
Beyond that, this development could force the US and its allies to rethink the “exclusivity” of their technology.
If the vulnerabilities of a system are known to a civilian in Chengdu, they are certainly known to the professional military in Beijing. This will drive a shift toward “attritable” systems — cheaper, unmanned platforms that can be lost in large numbers without a devastating financial or political cost. The era of the “exquisite” platform, represented by the F-35, may be giving way to the era of the “distributed” swarm.
The video tutorial ultimately proves that in the 21st century, information is the ultimate equaliser. The F-35 remains a formidable machine, but its greatest shield — the aura of invincibility — has been pierced by a viral video.
As the tutorial concludes, the goal is not to match the enemy’s strength, but to make their strength irrelevant through the application of physics, patience, and low-cost innovation.
Here is an Indonesian news report on the viral video. An AI translation of the key points from the video follows.
[embed]
AI translation:
The report states that the Iranian Revolutionary Guard Corps claimed to have damaged a United States military aircraft over central Iran on 19 March 2026 [00:04]. This event is cited as a significant development following the outbreak of conflict in late February. United States Central Command reportedly confirmed that a jet was forced to land after an operation in the region [00:25].
Military analysis provided by retired People’s Liberation Army Colonel Yue Gang suggests that while the F-35 is marketed as having a stealth capability 100 to 200 times greater than the French Rafale, it is not invisible [01:02]. Yue Gang posits that the aircraft was likely not hit by a conventional surface-to-air missile system like the S-300 but rather by a missile using infrared guidance [01:25].
The analysis further mentions that Iran possesses R-27T missiles capable of reaching speeds of Mach 5. These missiles utilise infrared sensors rather than radar-based tracking [01:51]. Analyst Song Zhongping reinforces this by stating that stealth technology is designed primarily to evade radar and that electro-optic or infrared sensors remain effective for detection [02:16]. He concludes that “stealth” does not equate to being entirely invisible to all forms of modern sensor technology [02:37].
https://www.defenseone.com/technology/2024/05/f-35-stealth-vs-low-frequency-radar/
https://www.airandspaceforces.com/article/the-f-35-on-the-edge/
https://www.lockheedmartin.com/en-us/products/f-35/f-35-capabilities.html
https://www.airandspaceforces.com/usaf-pilot-shrapnel-wounds-f-35-hit-iran/
https://www.aljazeera.com/news/2026/3/23/has-iran-brought-down-an-unkillable-us-f-35-jet
https://en.wikipedia.org/wiki/List_of_aviation_shootdowns_and_accidents_during_the_2026_Iran_war
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