The Boeing 737 Next Generation is the name given to the -600/-700/-800/-900 series of the Boeing 737 after the introduction of the -300/-400/-500 Classic series. They are short to medium range, single aisle, narrow body jet airliners. Produced since 1996, 3,172 737NG aircraft have been delivered as of January 2010.
The Boeing 737-900ER (Extended Range), known as the 737-900X is a short-to-medium range twinjet, also it is a version of the 737-900 model, but one more advanced, being used to carry more passengers and fly farther. This aircraft increases the capability of the Next-Generation 737 family. The 737-900ER, which was called the 737-900X prior to launch, is the newest addition and the largest variant of the Boeing 737 line and was introduced to meet the range and passenger capacity of the discontinued 757-200 and to directly compete with the Airbus A321.
The Boeing Commercial Airplane Company is constantly evaluating new technologies and designs to develop existing aircraft for customers and in 1967 this company introduced a short - and medium - range airliner, the twin-engine 737. Since then, this aircraft has become the best-selling commercial jet in the world. Now, the 737 is still being fabricated, and permanent enhancements are made. Several versions have been developed, principally to increase seating capacity and range.
The Boeing 737 is a popular, twin-engine, short- to medium-range aircraft that stands out by its simplicity, reliability and low operating costs and maintenance.
The first Boeing 737-700 was released in 1998, to Southwest and after that, more than 2,240 Next Generation 737s aircrafts have been sold in worldwide.
The Boeing 737-800 is an expanded version of the 737-700, and substitutes the 737-400. This aircraft was launched by Hapag-Lloyd Flug (now TUIfly) in 1994 and entered service in 1998. The first Boeing 737-800 was delivered to Hapag-Lloyd in 1998. More than 2,240 Next The Boeing 737 Next Generation is represented of the -600/-700/-800/-900 series of the Boeing 737 after the inauguration of the -300/-400/-500 Classic series.
The Boeing 737-900 was known as the 737-900X and was launched in November 1997 with an order from Alaska Airlines. Boeing’s Next Generation 737-900 and 737-800 are the largest members of the strong selling 737 family, being powered by two CFM International CFM56-7B26 turbofans. The Boeing 737-900, a derivative of -800 model, with two sections being added to the baseline model fuselage, can carry 189 passengers in a typical cabin configuration.