The Antonov An-124 Ruslan (Ukrainian and Russian: Антонов Ан-124 «Руслан») (NATO reporting name: Condor) is a strategic airlift jet aircraft. It was designed by the Ukrainian SSR's Antonov design bureau, then part of the Soviet Union. It is the world's largest ever serially-manufactured cargo airplane and world's second largest operating cargo aircraft. During development it was known as Izdeliye 400 in house, and An-40 in the West. First flown in 1982, civil certification was issued on 30 December 1992. Over forty are in service (26 civilian models with airlines and 10 firm orders as of August 2006) and 20 were in commercial use in 1998 in Ukraine, Russia, the United Arab Emirates and Libya.

Source: Wikipedia, "Antonov An-124", available under the CC-BY-SA License.