Antonov An-124 UR-82073 flew over Kyiv and landed in Leipzig, marking a rare flight through Ukraine’s restricted airspace.

A senior Russian defense ministry official said the operation will be performed from Monday through Friday along an agreed route.

The Antonov An-124 was a heavy-lift strategic military transport the Soviets built in 1982. This aircraft was similar to the U.S.'s Lockheed C-5 Galaxy and was the basis of the An-225.

Antonov is rebuilding the An-225 Mriya, the world’s largest cargo airplane, which was destroyed during Russia’s invasion of Ukraine.