I have been experiencing some problems on my approaches. Here is the scenario:
I am approaching an airport. I check the METAR, it’s indicating 9 knots surface winds, and I am planning to fly a CAT III ILS as winds should not be too bad.
Time passes, the winds on the METAR stay the same. I am now established and and engaging APPR. However, I see a problem. I am experiencing 28 knots of crosswinds at 3000, but i say to myself “It will die away, continue with your ILS” I’m getting closer, 5nm out, I deploy gear. Winds don’t change, and I am getting concerned. At ~4nm out, I take over. I am a bit late and my approach is unstable as a lot of rudder movements are needed. I get closer, but the winds don’t change.
I am both confused and also having an unstable approach, so I slide off centerline. I go around.
I come back in for a Visual Approach and add rudder from 7-8 nm and everything is fine.
My question is: Is there any way I can know wind speed at 5-10 feet above the ground so I can plan accordingly? How can there be a 18 knots wind difference between surface winds and winds that are 5-10 feet above?
Any help is appreciated!