Given the following METAR, an aircraft intends to take-off from Runway 23, with magnetic variation of 10°E. What is the wind direction relative to the aircraft's take-off direction?
SA1430 21019KT 7000 SKC 21/03 Q1024 =
The wind direction (210°T) given by a METAR, TAF, SIGMET, etc. is a True direction.
The runway direction (230°M) is a Magnetic direction. Thta's why any wind information given by the ATC to the Pilot for take-off or landing is magnetic.
So, in order to determine the wind direction relative to the aircraft's take-off direction, either the runway's magnetic direction must be converted into true, or the wind's true direction into magnetic:
- Wind true direction 210° into magnetic: 210°T - Var. 10°E = 200°M (Variation East, Magnetic least).
Thus, the wind direction relative to the aircraft's take-off direction is: 230°M - 200°M = 030° from the left.
Your Notes (not visible to others)
This question has appeared on the real examination, you can find the related countries below.
-
Austro Control1
-
Germany1
-
Latvia1
-
Norway1
Use Keyboard Shortcuts
