Not too sure if I was just seeing things today, but at around lunch time a 737NG flew over on finals to NZCH, had a look and noticed there was a winglet on the right wing, but not on the left....has anyone heard anything about it? Or was I just seeing things....
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must have been seing things. not having a winglet on one side would create slightly more drag on the winglet-less side would it not? making the one winglet pointless due to the extra power required to keep it flying in a certain direction (if it is rolling slightly to maintain heading, there will be less lift force directly up, and more to the side. more power would be required to compensate for that lack).
arent winglets actually replacment wing-tips anyway? sounds a bit silly to go through all that trouble to remove/add one and not to the other