API looked at blended winglets for the 777 and figured out that the 777 wing is already so efficient that adding a winglet will only bring VERY minimal benefit.
Ruffles1960,
I heard that anyone dumb enough to accept a seat on the upper deck better bring a parachute to slow them in case of EVAC down the slide. Also heard they are going to ban women with skirts and nylons from the upper deck as well.
