World's Largest Plane

Largest Plane in the World

I'm confused by the way the record for largest plane is determined. I read that the largest airliner in the world is the 747-400, and then I read it is the An-225. Similarly, I read that the plane with the largest wingspan is the Spruce Goose, and then I read about an airliner called the Bristol Brabazon with a wingspan larger than the 747! Could you please define the records, if any, that these aircraft hold with EXACT wording to the particular record?
- question from Jack

Aircraft records can indeed be confusing. If you need any reminder of that observation, try looking through the records on the FAI website. FAI, short for Fédération Aéronautique Internationale, is the international body that officially recognizes aviation and space records. However, most of the information on that site concerns aircraft performance, such as speed and altitude, rather than size.

Your question really comes down to how you decide to compare one plane to another. One of the measurements you mention is wingspan. While this dimension is often used to compare overall size, it is generally not the most accepted measure. Aircraft are usually ranked by weight, the maximum takeoff weight in particular. By this measure, the world's largest plane is the Antonov An-225 built in Ukraine when it was part of the Soviet Union.


An-225, largest plane in the world

The An-225 is quoted as having a maximum takeoff weight of over 1.3 million pounds (600,000 kg). The FAI gives credit for a slightly lower weight of 1.12 million pounds (508,200 kg), the record set by an An-225 in 1989 for the largest mass ever lifted by an airplane to an altitude of 6,500 ft (2,000 m). The An-225 was originally built to ferry the Soviet Buran space shuttle but it is now used to transport various outsize cargos. Only one example was ever completed, and it is currently available for charter flights through the British company Air Foyle. The An-225 is a cargo transport only and has never been used as an airliner.

If we continue to measure by maximum takeoff weight, the next largest plane in the world would be either the related An-124 transport or the Boeing 747 airliner. Both aircraft are quoted with a maximum weight around 900,000 lb (405,000 kg). The An-124 was also built by the Soviet Union as a large cargo plane for both military and civil use. The basic design was later enlarged and adapted to produce the An-225.


An-124

Over 50 examples of the An-124 were ultimately built, and many are now operated on charter flights through Air Foyle or other commercial firms. The American EP-3 reconnaissance plane that was forced to land after colliding with a Chinese fighter was actually transported back to the US aboard an An-124 chartered by the American government.

Boeing 747

The Boeing 747, meanwhile, is currently the world's largest commercial airliner and typically carries about 400 passengers on intercontinental flights. The 747 will not retain its title for long, however, since the new Airbus A380 will carry over 550 passengers and have a takeoff weight over 1.23 million pounds (560,000 kg).