- Sep 17, 2008
I worked on a Cessna 400 that had the weeping-wing anti-ice system. Zillions of lasered holes, too tiny to see, on a stainless leading edge cover. Too small for bugs to plug, really, but any dust or other contaminants would cause trouble. The holes in this wing are .12 mm, about .005", a lot larger and lot more likely to make huge trouble in the rain. And the claim of a 50% reduction in profile drag is not supported by any evidence whatever on the website. All of it makes one skeptical, at least. It's just another case of wait-and-see for some proof that it all works just fine.When it mentions all those tiny suction holes in the wing I can't help but wonder what happens if you fly through a dust cloud or a swarm of bugs or anything really. How much work is it gonna be to inspect and clean those passageways out after every flight?