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When wind details are given from the tower over the radio, what direction is this related to?

  • A

    Magnetic

  • B

    Compass

  • C

    True

  • D

A good rule of thumb: 

  • What you read is TRUE, what you hear is MAGNETIC

Wind direction reported by an air traffic control tower (via voice/ATIS) is given relative to Magnetic North. This is because runway numbers and magnetic compasses in aircraft operate on magnetic, not true, headings. 

However, wind direction on meteorological charts (METARs/written reports) is usually referenced to True North.

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