Boeing's 737 MAX development team expects to achieve a firm configuration of the more fuel-efficient single-aisle transport in July. The company is so confident about production that it is hinting the airplane's service entry may inch forward from the current plans of fourth-quarter 2017. While the primary focus is on the shift to the CFM Leap-1B engine to cut fuel burn by 13% over 737 NG's CFM56-7B, the design and material changes are also being introduced to reduce MAX's weight and ...

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