Originally Posted by
KenV
Absolutely no need. The wingtips are unfolded BEFORE takeoff. If there is a jam or other problem that prevents the wingtip from locking down it will be caught before takeoff and you simply don't takeoff.
Further, remember it is the raked wingTIP that is folded. Asymmetry is not really much of an issue. For example, suppose the winglet on one side of a 737 or A320 broke off? What would be the flight impact? Controllability wise, it would be almost a non issue.
ive flown a 737 on a ferry flight with a broken winglet.