Antonov An-225 is the world’s heaviest fixed-wing aircraft. One An-225 was completed in 1988 and a second An-225 has been partially completed. The one An-225 is in commercial operation carrying oversized payloads. By 2000, the need for additional An-225 capacity had become apparent, so the decision was made in September 2006 to complete the second An-225. The second airframe was scheduled for completion around 2008, then delayed. By August 2009, the aircraft had not been completed and work had been abandoned.