Winglets help to reduce drag and increase efficiency and are a common sight on most modern jetliners. Boeing 737 models have gone through 4 types of winglets: Mini, Blended, Split Scimitar ...

The Boeing 727 is a mid-size narrow-body three-engine jet aircraft built by Boeing. The Super 27 modification increased speed by 50 mph (80 km/h), due to replacement of the two side engines with the ...