The Airbus A320 is the third type of passenger aircraft designed by Airbus. It is also the most popular aircraft model of the manufacturer.
The A320 series has two variants, the A320-100 and A320-200. The A320-200 is the definitive version as only 21 A320-100s were ever produced; these aircraft, the first to be manufactured, were delivered only to Air Inter, an airline later acquired by Air France and British Airways (as a result of an order from British Caledonian Airways made prior to its acquisition by British Airways) and are the only A320s that lack the distinctive wingtip fences. The A320-200 features wingtip fences and increased fuel capacity over the A320-100 for increased range; other than that differences are 
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minimal. The last 5 A320-100 aircraft, operated by British Airways, were disposed of at the end of 2007. Typical range with 150 passengers for the A320-200 is about 2,900 nautical miles (5,400 km). It is powered by two CFMI CFM56-5 or IAE V2500 with thrust ratings between 25,500 to 27,000 pounds force (113 kN to 120
kN). On the first of December 2010, Airbus announced the A320neo (New Engine Option), which was to be equipped with either CFM International LEAP-1A or Pratt and Whitney PW1000G engines, as well as sharklets and an improved cabin, with around 6,000 being ordered so far.

The Airbus A320 is the base aircraft for the rest of the A320 family, consisting of the lengthened Airbus A321 and the shortened A319 and A318. A corporate jet version known as the ACJ320 has also been developed. In 2019, Elbe Flugzeugwerke expects to begin conversion of old A320s to a freighter configuration known as the A320P2F. This aircraft is intended to replace the Boeing 757F in the mid-range freighter market.

220px-Airbus A320neo landing 03

The A320neo prototype

300px-IndiGo Airbus A320neo F-WWDG (to VT-ITI) (28915135713)

An Airbus A320neo

The direct Boeing competitor is the 737-800.
220px-Alitalia Airbus A321 I-BIXT

The stretched A321

220px-British Airways A318

The A318