Hudson. Why not add a factor for gusts? If the wind is 15kts gusting 25 and you're coming in on a normal 60kt approach you could lose 10kts of airspeed plus associated lift. You'll need much more power to recover because you're on the back end of the L/D curve, whereas if you added a factor for gusts you'd be adding to your safety margins.
Yesterday I was up in a Tomahawk close on x-wind limits and on an approach which was quite turbulent due to rotor from trees. My student was accurately trimmed @ 70kts (the correct speed for the Tomahawk) but the airspeed was fluctuating between 70-65kts but sometimes as low as 60kts; that is, less than 1.3Vs which is hardly safe. We had a better margin when trimmed for 75kts. I appreciate that the Traumahawk is different to a C150/2 but I have experienced similar on the C152.
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0 to 2000ft in 10 minutes