Why the Yak-40 Is the MOST Inefficient Airliner Ever Built

The Yak-40 looks small, cute… and completely harmless. But don’t be fooled. This Soviet tri-jet might just be the most inefficient, chaotic, and downright cursed airliner ever built.

With three thirsty jet engines, terrible fuel efficiency, primitive systems, and a cockpit that feels like it was designed in a factory basement, the Yak-40 raises one big question: how did this thing ever become a real passenger plane?

In this video, I break down why the Yak-40 burns absurd amounts of fuel per seat, why its design makes so little sense compared to modern airliners, and why flying it is far more confusing than it should be. I also take it into the simulator to see whether this plane is actually flyable — or if it’s just as impossible in the air as it looks on paper.

Is the Yak-40 a misunderstood engineering marvel… or simply the worst airliner ever made? Let’s find out. ✈️

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