Large aircraft

Large aircraft allow the transportation of large and/or heavy payloads over long distances. Making an aircraft design larger can also improve the overall fuel efficiency and man-hours for transporting a given load, while a greater space is available for transporting lightweight cargoes or giving passengers room to move around. However, as aircraft increase in size they pose significant design issues not present in smaller types. These include structural efficiency, flight control response and sufficient power in a reliable and cost-effective installation.

Large aircraft also require specialised ground facilities, and some countries have special regulatory environments for them.

The giant airships of the 1930s are still some of the largest aircraft ever constructed, while the Hughes H-4 "Spruce Goose" of 1947 had the largest wingspan of any fixed-wing type (it's still the largest seaplane ever built, and it had the largest wingspan of any aircraft ever flown until the twin-fuselaged Scaled Composites Stratolaunch first flew on April 13, 2019, with by far largest wingspan, still widest; larger than significantly larger than an American football field). The Hybrid Air Vehicles Airlander 10hybrid airship is the largest aircraft flying today (by volume, its wingspan isn't largest; the Caspian Sea Monster is still longest, was once largest and heaviest, the even heavier Antonov An-225 Mriya was heaviest until its destruction in the 2022 Russian invasion of Ukraine).