Alaska has retired its last Boeing 737 without winglets, a rather rare breed. The Seattle-based airline is in the process of ...

Aviation Partners, a Seattle, Washington company, has a new design it calls a "blended" winglet. The Boeing Business Jet (opposite, top), a derivative of the Boeing 737, has a set of the firm's ...

In addition to raked wingtips, Boeing also employs split-scimitar winglets, which can be found on the 737 MAX. The company was also the first to use folding wingtips on a commercial aircraft ...