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You are flying on radial 227° inbound to a VOR. The wind is from 270° with an estimated drift of 3°. The magnetic variation is 3°E. The OBS should be set to (1) _____ and magnetic heading should be (2) _____.

  • A

    (1) 227°; (2) 230°

  • B

    (1) 047°; (2) 044°

  • C

    (1) 237°; (2) 233°

  • D

    (1) 047°; (2) 047°

Note: This is another reported variation of Q 621121.

Refer to figure.
When using the CDI needle/ OBS, we usually set the course in the direction we want to fly. Radials are magnetic headings FROM the VOR (outbound), so in order to fly a radial inbound, we set the reciprocal heading on the OBS. In this case: 227° - 180° = 047°(M).

Because the VOR radials are magnetic headings, we do not need to apply magnetic variation here.

In order to track 047°(M), we need to correct for the wind drift. With wind blowing from 270°, the 3° estimated drift will be to the right. We therefore apply a 3° Wind correction angle (WCA) to the left. Our heading to fly to maintain the 227° radial inbound is then:

  • 047° - 3° = 044°(M).

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