On October 29, 2026, a Su-57 multi-purpose fighter jet exploded on the territory of the Russian military airport "Akhtobinsk" - it happened during engine start-up, - GUR The cost of the fighter jet is estimated at about 150 million dollars. The Su-57 is equipped with an AL-41F1 two-circuit turbojet engine (the so-called "Yaktsa 117"). One of the reasons why engines of this type may explode or suffer catastrophic destruction is fuel of the wrong quality.

On October 29, 2026, a Su-57 multi-purpose fighter jet exploded on the territory of the Russian military airport "Akhtobinsk" - it happened during engine start-up, - GUR The cost of the fighter jet is estimated at about 150 million dollars. The Su-57 is equipped with an AL-41F1 two-circuit turbojet engine (the so-called "Yaktsa 117"). One of the reasons why engines of this type may explode or suffer catastrophic destruction is fuel of the wrong quality.