Slingsby T67 aileron thingy?
Just got a T67 MkII in our club. Taking a look round it and see that both ailerons and one side of the elevator (side without the trim tab) have odd 'plates' on the trailing edge of the surface.
The 'plates' are normal to the airflow and extend for about half the span of the ailerons, on the inboard end. They extend above and below the surface by around 6mm.
Does anyone have any idea what they do?