Early winglet designs were angular, and could often be seen on older aircraft such as the Boeing 747-400 and all variants ... 25 of its Boeing 757-200s and 767-300ERs. While these are the older ...

Boeing claims that winglets installed on its 757 and 767 airliners can improve fuel burn ... fitted to aircraft such as the Boeing 747-400 and the McDonnell Douglas MD11 offered up to 2.5% to ...