First flight of the prototype of the Mil Mi-6 Type series
Wednesday, June 5, 1957
This is a Notable Operational milestone.
Description:
A second generation Russian helicopter, the Mi-6 was designed for transport of troops and military equipment. It made its first flight in 1957.
Source: "Mi-6 heavy troop-carrying helicopter". Russia's Helicopter World, 2000. Published by Vertolet. Page 28.
