[Kharon]

Brock – “Some folks suggest such a warning would be expected on the underside of the extreme edge of a 777's wingtip, because that's where static build-up can occur.”

That would be ‘static’ as in electricity; Static Wicks are fitted to manage, amongst other things, static build up.  They are not (usually) identified with the annotation ‘Static’ that, as P7 points out, is reserved for the vital ‘static' air pressure port.



'Flying' provided a basic brief.