<page_title> List of large aircraft </page_title> <section_title> Civilian </section_title> <table> <cell> Antonov An-225 Mriya <col_header> Aircraft </col_header> </cell> <cell> 21 December 1988 <col_header> First flight </col_header> </cell> <cell> Generally acknowledged as the largest airplane in the world, the single Antonov An-225 is the world's heaviest aircraft ever (maximum takeoff weight greater than 640 tons) and the largest heavier-than-air aircraft (in length) ever entering operational service. <col_header> Note </col_header> </cell> </table>
Antonov An-225 Mriya is the heaviest aircraft ever built, with a maximum takeoff weight of 640 tonnes.