B
Boeing produces 42 of the type per month in 2015, and expects to increase to 52 per month in 2018. The slow selling 737-600 is no longer being marketed and was removed from the Boeing website as of 2016, its position as the smallest model being taken by the more popular 737-700.
Boeing 737-700 in Air Berlin-Boeing livery, showing blended winglets available on the 737 Next Generation models
Replacement or re-engining
Since 2006, Boeing has discussed replacing the 737 with a " clean sheet " design( internally named " Boeing Y1 ") that could follow the Boeing 787 Dreamliner. A decision on this replacement was postponed, and delayed into 2011. In November 2014, it was reported that Boeing plans to develop a new aircraft to replace the 737 in the 2030 time frame. The airplane is to have a similar fuselage, but probably made from composite materials similar to the Boeing 787 Dreamliner. Boeing also considers a parallel development along with the 757 replacement, similar to when the 757 / 767 were developed in the 1970s. On July 20, 2011, Boeing announced plans for a new 737 version to be powered by the CFM International LEAP-X engine, with American Airlines intending to order 100 of these aircraft. On August 30, 2011, Boeing confirmed the launch of the 737 new engine variant, called the 737 MAX, with new CFM International LEAP-1B engines. On September 23, 2015, Boeing announced a collaboration with Commercial Aircraft Corporation of China Ltd. to build a completion and delivery facility for the 737 in China, the first outside the U. S.
The 737 ' s main landing gear under the wings at mid-cabin rotates into wells in the aircraft ' s belly. The legs are covered by partial doors, and " brush-like " seals aerodynamically smooth( or " fair ") the wheels in the wells. The sides of the tires are exposed to the air in flight. " Hub caps " complete the aerodynamic profile of the wheels. It is forbidden to operate without the caps, because they are linked to the ground speed
Boeing B737
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