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Timeline |
Despite an hesitating career start and despite the enormous competition in the short and medium range gap, the Boeing 737 would soon become the most widely sold commercial airplane of its time.
Equipped for low visibility landing (Category 2), the 737-100 distinguished itself from the other planes in competition by the large fuselage inherited from the Boeing 707 and 727.
The first prototype flew for the first time April 9, 1967, and it is Lufthansa that was going to make the production take off, thanks to a first order of 22 machines equipped with the Pratt & Whitney JT8D-7 engine.
After the 30 737-100 built came the famous B-737-200 version, of which 1,114 exemplars were built. It was used by 118 companies at the end of the eighties. The 200 made its first takeoff August 8, 1967. The first deliveries came to United Airlines, after a long dispute with the pilots union. It was indeed the first time that a two men crew was introduced in this company and as a result, the first 737's in this company were flown with a crew of three.
Whereas the 100 version was foreseen to transport one hundred passengers, the 737-200 could carry a maximum of 130. A Convertible version, the 200C, as well as a 2000C "Quick Change" equipped with a large cargo door in the front of the cabin were constructed. For operations on craggy fields, a special kit protecting the engine air intakes and lower fuselage was also available. The U.S.A.F. used 19 T-43A versions from 1973 for navigation practice.
With a maximum capacity of 149 seats, the 737-300 made its first flight on February 24, 1984. It introduced many improvements, such as an increased use of composite materials, a new electronic flight instruments system (EFIS), some aerodynamic improvements and mostly, the introduction of the CFM-56 engine produced in co-operation by General Electric and Snecma.
The lengthened 737-400 version, with a maximal capacity of 172 passengers, made its first flight in February 1988. Thanks to this high capacity in full economic setup, the 400 appeared ideally adapted for the charter compagnies.
Flying for the first time on June 20, 1989, the 737-500 can be considered as the successor of the 200, its dimensions and capacities being very similar.
A common type qualification for the three variants is an advantage that was soon followed by European competitor designers of Airbus Industries.
Victim of its success in the nineties, the 737 production knew important supply problems from 1995. The resulting delivery delays brought a lot of worries to the Seattle company that didn't recover until the end of the decade. At that time, production of these models had practically stopped.
The first 737-700 flew on February 9, 1997, whereas the 737-600 made its first takeoff January 22, 1998.
Thanks to the new CFM56-7 engines and a new design of all surfaces (Wing span, cord and a superior area), the third generation small 737 offers some attractive performances compared to the old models, notably with regard to the cruise speed (Up to Mach .80) and fuel capacity. The common type qualification is maintained with older 300-400-500 series, thanks to a programmable EFIS system that can replicate the older configurations.
The convertible version of the 737-700, the 737-7000C, was ordered by the American Navy, under the denomination C-40A.
A "Business Jet" version is available since September 1998. Based on the 700 for the fuselage and on the 800 for the wing and landing gear, this version has an autonomy of 6,900 miles (6,000 nm).
The 737-800 is a stretched version of the 737-700, and supersedes 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 -800 was launched by Hapag-Lloyd Flug (now TUIfly) in 1994 and entered service in 1998. The 737-800 seats 162 passengers in a typical two-class layout, or up to 189 in one class. It competes with the Airbus A320. For many airlines in the U.S., the 737-800 replaced aging Boeing 727-200 trijets and MD-80 series and MD-90 aircraft.
The P-8 Poseidon is a 737-800ERX ("Extended Range") that, on June 14, 2004, Boeing's Integrated Defense Systems (now called Boeing Defense, Space & Security) division beat Lockheed Martin in the contest to replace the US Navy's P-3 Orion maritime patrol aircraft.
Boeing later introduced the 737-900, the longest and most powerful variant to date. Alaska Airlines launched the 737-900 in 1997 and accepted delivery on May 15, 2001. Because the -900 retained the same number of exits as the -800, seating capacity was limited to 189 in a single-class layout. The 737-900 also retained the maximum takeoff weight (MTOW) and fuel capacity of the -800, trading range for payload. These shortcomings until recently prevented the 737-900 from effectively competing with the Airbus A321.
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. An additional pair of exit doors and a flat rear pressure bulkhead increase seating to 180 passengers in a typical 2-class configuration or up to 215 passengers in a single-class layout. Additional fuel capacity and standard winglets improve range to that of other 737NG variants—around 3200 nm. The first 737-900ER was rolled out of the Renton, Washington factory on August 8, 2006 for its launch customer, Indonesian Lion Air. Lion Air received this aircraft on April 27, 2007 in a special dual paint scheme combining the Lion Air lion on the vertical stabilizer and the Boeing livery colors on the fuselage. The 737-900 has been discontinued in favor of the 737-900ER.
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