B737NG winglets
Just a quick query about the winglets on NG 737s. I have an upcoming interview next week, and a common question that is asked from the panel is why do some of our fleet have winglets and some don't. Its Virgin Blue in OZ. My guess is its cost against benefit from the winglets being fitted. ie. they may have some non wingleted aircraft dedicated to shorter routes, say <500nm. So to an aircraft that is more dedicated to longer haul, the benefit of having winglets fitted would be far greater. Just looking for a good answer totell them.