Antonov An-124-100 Ruslan - largest mass produced airplane ever built

The Antonov An-124 Ruslan (NATO reporting name: Condor) was the largest aircraft ever mass produced until production of the Airbus A380 started, and was, until the advent of the An-225 Mriya, the largest aircraft in production. During development it was known as the An-400 and An-40 in the West, and it flew for the first time in 1982. Over forty are currently in service (26 civilian models with airlines and 10 firm orders at August 2006) in Russia, Ukraine, UAE and Libya.