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Old 11th Jun 2009, 08:34
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No Further Requirements
 
Join Date: Sep 2000
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The statistical answer to the question has to be ""No" - however the vast majority of professional ATCOs will provide it, as it is simply good airmanship ...

The ATIS can only offer a mean wind, whereas the Take-Off Clearance will generally provide an instantaneous wind.
Significant generally means 10 degrees change in direction, or 5 knots in velocity (any change if it is tailwind). Surely anything less than that is insignificant and not worth telling to the crew?

Cheers,

NFR.
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