Har ikke sett noe enda. Kunne bare finne denne info at de begynner i Mars:
For KLM Royal Dutch Airlines, Blended Winglet equipped 737-900s will continue to provide important fuel savings while adding to fleet commonality -- the airline will be installing 21 additional Blended Winglet Systems on the 737-800 beginning in March 2007. All 737-800s in KLM's fleet will be Winglet equipped by February 2008.
http://news.thomasnet.com/companystory/503772