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To calculate the crosswind on final approach, take the difference between the runway QDM and the wind direction, and then use a clock face to work out the proportion of wind speed which is blowing across the runway.

e.g. 240/15 landing on R26 gives 20° difference. The 20 minute point on a watch face is a third of the way round the hour, so the cross wind blowing is one third of 15kts = 5kts crosswind

e.g. 215/12 landing on R26 gives 45° difference. The 45 minute point on a watch face is three quarters of the way round the hour, so the cross wind blowing is three quarters of 12kts = 9kts crosswind.
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Flight planning

Flight planning New flightplan NOTAM map LARS map & NOTAMs Danger area, mil. & TRA activations Weather map GPS route download Find waypoints Your waypoints New waypoint

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