J170 wing

[frank marriott]

Does anyone know the reason for the "lift spoiler" mid way along the wing of the new 170s.

 

I have seen similar devices on wing roots to induce the wing root to stall before the wing tips for better handling but these ones are at least half way out along the wing.

 

I'm guessing they are to reduce some of the lift on the larger wing for handling on landing - but I am only guessing - thought someone here might actually know?

 

Frank