Several airliners use them. The Airbus A319 and A320 have very small upper and lower winglets. The longer-range twin-engine A330 and four-engine A340 have conventional winglets, as do Boeing 747-400s.

The Federal Aviation Administration (FAA) has followed the lead of the European Union Aviation Safety Agency (EASA), which is ...

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