LyrArc Article Gist
Before the war the supplies, spare parts and some of the aircraft for the heavy duty Antonov cargo carrying planes were shifted to Leipzig, Germany from Ukraine. Some of the other aircraft were damaged in the early days of the war near Hostomel. Ukraine was the location of a  significant part of manufacturing capability in the old Soviet Union. The very first helicopter that was mass produced in the world Sikorsky R-4 was made in the US in 1942 and designed by Sikorsky, who is from Kviv , Ukraine. After winning a competition in St Petersburg in 1912 for an early design Sikorsky immigrated to the US in 1919 to form the Sikorsky aircraft company in 1923. 

Sikorsky's story including his early education in aviation in St Petersburg reflects the strong ties that Ukraine has with Russia, yet with the Bolsheviks and the Russian Civil War he chose the opportunities the US offered, and chose to leave for the US.