Hi Chally604,
Not sure what the 8kts is for?
In my aircraft flap 30 limit speed is 162 knots.
At heavier, but sometimes even normal, weights our Vapp (Vref for flaps 30 plus half the stead headwind plus the full gust) will be uncomfortable close to this. In these cases we might use flaps 25 for landing as the limit speed is much higher. If we did this we'd use a Vapp of Vref for flaps 25 plus half the steady headwind component plus the gust.
Boeing say bleed of the steady headwind addition at some point before landing (i.e. between the threshold and the flare) but keep the gust addition.
Any help?