In april 2026, over the black sea, a rc-135w reconnaissance aircraft of the royal air force of england was in operation. Suddenly, russian soviet-35s approached only about 6 metres, directly triggering the emergency system of the british aircraft, and the autopilot broke off. Immediately thereafter, a su-27 crossed six times at 0. 8 mhz and crossed six metres in front of the british aircraft。
The british ministry of defence stated that this was “the most dangerous air contact since 2022”。
Six meters close. Why do autopilots throw hands
A lot of people wonder how the nato top-notch surveillance aircraft will fail as soon as they get close. It's actually the life-saving logic of the crash prevention system (tcas). As su-35 approaches six metres, its huge radar reflectors allow the british system to determine that “crash is imminent”。
It's like driving on a high-speed speed cruise, and radar suddenly detects a car brake at a very close range, and the automatic emergency brakes will take over the brakes and force off the cruise. The same applies to aircraft, where the system believes that the computer's response is not fast enough and that control must immediately be handed back to the human pilot, which is the first step in the self-driving disconnect。
Six cross-cuts, full-on override
If it's just approaching, the pilot will be able to take over. But the six cuts of su-27 are fatal. At a speed of nearly 980 km/hour, it crosses at a distance of 6 m, creating a very strong wing vortex and engine tail flow。
Imagine you walking down the street with a glass of water, and it was a steady walk, but there were six high-speed run-bys in front of you, and the wind always made you shake. Your hands try to keep the balance, the water spills out. Rc-135w's attitude sensors detected a rollover and overlooking change beyond the system's maximum correction capability and could only give up control completely to prevent “the more the more the more the better”。
The plane's base, the reconnaissance aircraft's natural weakness
Why does this tactic work for rc-135w? Because the bottom line is a boeing 707 civilian passenger. The passenger plane is designed to be comfortable, like a cameraman with a long-focused lens that needs absolute stability to capture signals. And su-27 and su-35 are high-mobile heavy combat aircraft, like gymnasium athletes。
When gymnasts turn around in front of photographers, the wind directly upset the cameraman's balance. At a distance of 6 metres, which is shorter than the length of a london bus, any interference by fighter jets can destroy passenger platforms。
It's not a failure. It's a survival mechanism
The rc-135w autopilot failed, not as a bug out of the system, but as its security protection mechanism was triggered and used by the russian army's tactical precision. The russian army's combination of “side-wing oppression triggers alarms + front-sided vortex generation” was the death of a large reconnaissance aircraft “big and dumb, relying on automatic control”。
The fact that the machine has handed over control and the manpower has barely maintained itself in extreme inversion is the real dilemma that nato top surveillance aircraft have encountered over the black sea。
