Only one Mriya was ever completed, and it was rendered catastrophically inoperable in the 2022 Russian invasion of Ukraine. Efforts are underway to attempt to rebuild the aircraft and fly it again. Using the An-124 Ruslan as a design base, in 1985 Antonov began engineering a project called “Mk. 401.” It was later named the An-225, since it could carry up to 225 tons of cargo. Apart from being much larger than the An-124, the Mriya (“dream” in Ukrainian) was fitted with six turbofan engines, the same power sources used by the Ruslan.
Further distinguishing it from the An-124, the An-225’s empennage took a different form from that of its smaller progenitor. Instead of one large vertical stabilizer, the An-225 was designed with two, one on each end of its horizontal stabilizer, a design dictated by the aerodynamics of carrying massive loads atop its fuselage. The landing gear was also enlarged from that of the An-124; the Mriya had a total of 32 wheels, the rearmost of the main landing gear assembly able to turn.