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Old 5th Oct 2004, 13:22
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QNH 1013
 
Join Date: Oct 2000
Location: England
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No-one has mentioned the accuracy of the quoted wind. At a large airport, you will be given the 2-minute mean (unless it is qualified as an "instant" wind check). Gusts are not reported unless they exceed the mean by 10 knots because the wind is never (ok rarely) constant. At small fields, with A/G radio, you may be told a wind is 10 knots gusting 15, which at least tells you that the operator doesn't know how to quote windspeed.

Also the wind is being quoted 10 metres above the ground at a different part of the airfield to the bit of runway you are trying to land on.

All this means that the wind quoted is at best a guide, and remember that a forecast it is just that; a forecast.

When you are landing, particularly in a taildragger, what matters is can you arrest the drift before you put the wheels down.
If you can, then land, if not, then go-around. There are some exceptions to this such as taildraggers with skids and no brakes where the limiting factor is crosswind towards the end of the landing roll.

The quoted wind is a guide. The windsocks are better because you see the information quicker, but best of all are the blades of grass on, or either side of the runway, and how the aircraft itself is handling.

One trap to beware of is that some A/G operators seem to exagerate the wind by quoting the highest peak they have seen. The danger then is that you might believe that you can handle the quoted crosswind component, rather than the lower value you actually landed in. We had one member of our group who thought he had successfully landed a light taildragger with more than a 20 knot crosswind component because of this dangerous practice. Thank goodness he didn't try subsequently when the crosswind was correctly quoted as over 20 knots.

Currency is also a factor to consider. Just because you could handle a 20 knot crosswind in wonderplane A last year, doesn't mean you can today, if you haven't flown that type for a while.
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