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Old 27th August 2008 | 09:58
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Wingswinger
 
Joined: Aug 2003
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From: Hampshire physically; Perthshire and Pembrokeshire mentally.
Crosswind
Crosswind rule:

Sine of the angle - 30 degrees off - 0.5
45 degrees off - 0.7
60 degrees off - 0.9

e.g. A 30 kt wind 30 degrees off the runway track is 15 kts across; 45 degrees off is 21 kts across; 60 degrees off is 27 kts across.
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