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A very simple rule of thumb to find cross wind or drift without doing sums (can't fly and do sums at the same time) is to use the face of your watch. 15 minutes past is a quarter of an hour, 30 minutes is a half etc.

So if the wind is:

15 deg off use a quarter of it as cross wind
30 deg off is a half
45 deg off is three quarters
60 deg off use the whole.

This works for cross wind, drift (calculate the maximum drift for your TAS and apply the RoT) and for ground speed adjustment.

Once you have worked out the principle in your head, flight without formulae is yours!

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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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Forums Currently discussing "GP LAPL medical via CAA/Cellma"

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