Largest aircraft by weight ever

Largest aircraft by weight ever
Who
Antonov An-225 'Mriya'
What
640 tonne(s)/metric ton(s)
Where
Not Applicable
When
01 January 0001
The aircraft with the highest standard maximum take-off weight is the Antonov An-225 "Mriya" (Dream) originally built at 600 tonnes (1.32 million lb). In 2000-2001 its floor was strengthened resulting in an increased maximum take-off weight of 640 tonnes (1.41 million lb). A heavy-lift version of the standard Antonov An-124 "Ruslan" cargo plane, only two of these behemoths were ever built. It was built in the Ukraine (when part of the USSR) to carry the former Soviet space shuttle Buran. It has a wing span of 88.4 m (290 ft) - the greatest of any aircraft currently flying. The An-225 first flew on 21 December 1988. For comparison, the maximum takeoff weight of a Boeing 747-400 (Jumbo) is 396.89 tonnes (875,000 lb).