To China southern airlines Boeing has delivered the first equipped with performance improvements in engine of 737-737 aircraft. This is the first adopted the CFM56 engine - 7 be 737-800 aircraft, engine design improvements including the high and low pressure turbine changes, the optimization of main nozzle and the extension device, also adopted the drag reduction measures, can reduce fuel consumption and save cost. This new engine is 737 performance improvement to upgrade package, as part of the fuselage and engine improvements from mid - 2011 to early 2012, are being put into operation.

    Project 737 Boeing commercial group vice President and chief engineer John & # 8226; Hamilton (John Hamilton) said: we will continue to evaluate the performance of flight test data and collect the delivery data. To reduce fuel consumption by engine performance improvement is our is a new generation of 737 customers with leading value is an important part of.

    From the new generation of Boeing 737 put into operation in 1998, since the best-selling aircraft continue to improve, so far its fuel efficiency than the first delivery of a new generation of 737 has increased by 5%. Performance improvement to upgrade package will make further to promote the efficiency of a new generation of Boeing 737 fuel to 7%.