In article , wrote:

Dale wrote:
I fly VG equipped 206s and there is no change in Va.

Oh, contraire!

Va is a mathematical number, based on Vs0... stall speed (Va = Vs0 *
1.9?). When flying at Va (or below), at max gross weight, the
aircraft WILL stall before it bends. When flying above Va, at max
gross weight, it is possible to bend an aircraft before it stalls.
So, with VG on the aircraft, Vs0 is reduced. Hence, Va is reduced.


I agree with your math.

I fly a couple of P206s that have a STOL kit (leading edge), wing
extensions and VG's. Each of the mods reduce stall speed to some
extent. The only "mandated" airspeed change was a reduction in Vne from
210mph to 189mph after the wing extensions were installed. Placard
required to that effect. I found it odd that Va wasn't noted also.

--
Dale L. Falk

There is nothing - absolutely nothing - half so much worth doing
as simply messing around with airplanes.

http://home.gci.net/~sncdfalk/flying.html