Spoilers are long panels in the upper edge of aircraft wings that are used to reduce airspeed and lift, as when landing, for example.
Boeing describes the 737 MAX as a new-engine variant of the world's best-selling airplane and builds on the strengths of today's Next-Generation 737 with advances in fuel-efficiency and environmental performance. It says the new version of the 737 will reduce fuel consumption and carbon dioxide emissions by 13 percent. More than 1,300 orders have been placed for the new airplane, according to Boeing.
More than 10,000 Boeing 737s have been ordered so far, and Boeing forecasts global demand for more than 23,000 airplanes in the 737's market segment over the next 20 years at a value of nearly $2 trillion.
Delivery of the 737 MAX is planned to begin in 2017.