Yes, I understand that two wipers (one at the Pilot and another at the co-pilot side) are kind of a backup-system. But why the hack TWO(!) knobs for each of them...? :)I think one knob for Both(!) wipers would be safety enough, wouldn`t it?GreetingsSusan

Have you heard of the sleep number beds? A double-bed where you can adjust the firmness of the mattress on the LEFT and RIGHT individually? Well, that's the same concept. :-)The only reason I can think of is if the two pilots have different setting preferences. The Airbus A340/A330 by PSS has only one!- Neeraj

Hi Neera,well I understand the individuality at beds and other useful things really very much...but after all I have still huge difficulties to understand the individuality for wiper settings for each pilot...LOL :) :)Good night and many greetings! Susan