Originally Posted by
bentley01
Not true 1/2 the headwind and all of the gust factor upto +15 or placard-5. So you could have + 15 added to VREF on a gusty day.
Oh dear!
Crosswind, not headwind! If there's no head component, (90° across), then i you should NOT be adding an approach speed wind additive, and if you do, you are operating completely outside your performance calculation and risk an overrun (you can manually increase from the +5kt on the Boeing opt vref entry if you insist on adding speed anyway, but even that, I think it's supposed to be washed off prior to touchdown, from memory).