The A321 programme was launched in November 1989 and the first development aircraft first flew on 11 March 1993. European certification was awarded in December that year.
The A330-200 is similar to the A340-200 and a shortened version of the A330-300. With poor sales of the A340-200 (of which only 28 were built), Airbus decided to use the fuselage of the A340-200 with the wings and engines of the A330-300.
The A330-300, which entered service in 1993, was developed as replacement for the A300. It is based on a stretched A300-600 fuselage but with new wings, stabilisers and fly-by-wire systems.
The A340-300 flies 295 passengers in a typical three-class cabin layout over 6,700 nautical miles (12,400 km). This is the initial version, having flown on 25 October 1991, and entered service with Lufthansa and Air France in March 1993.
The prototype of the -300 rolled out of the Renton plant on January 17, 1984, and first flew on 24 February 1984. After it received its flight certification on November 14, 1984, USAir received the first aircraft on 28 November
The 737-700 was the first of Next Generation series when launch customer Southwest Airlines ordered the variant in November 1993.
The 737-800 is a stretched version of the 737-700, and replaces the 737-400. It also filled the gap left by the decision to discontinue the McDonnell Douglas MD-80 and MD-90 following Boeing's merger with McDonnell Douglas.
The 747-400 is an improved version of the 747-300 with increased wingspan, winglets, revised engines and a glass cockpit that removed the need for a flight engineer.
The A320-200 features wingtip fences and increased fuel capacity over the A320-100 for increased range; other than that differences are minimal.
The 757-200 is the definitive version and forms the majority of 757s sold. It shares its fuselage cross section with the smaller 727 and 737.
The 767-300 is a 21.1 ft (6.43 m) stretch of the 767-200. The -300 was first ordered by Japan Airlines in 1983. It first flew on January 30, 1986, and was delivered to JAL later that year on September 25.
The 777-200 was the initial A-market model. The first -200 was delivered to United Airlines on May 15, 1995.