Мировой бесполезный самолет = World's useless plane (mangled Russian). Correct Russian line should be "Бесполезные самолёты мира". The planes are Polikarpov I-16.
By the way, Akashi wears Gold Star of Hero of the Soviet Union. That means she also has Order of Lenin.
The World's Worst Aircraft
(literal translation; a more grammatically correct sentence would have been «Худший в мире самолёт» instead)