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Refer to figure.
When flying a magnetic heading of 210°, the deviation is (1) _____ and the compass heading you'll have to fly is (2) _____.

  • A

    (1) -1°; (2) 209°

  • B

    (1) 1°E; (2) 209°

  • C

    (1) 1°W; (2) 211°

  • D

    (1) +1°; (2) 210°

Refer to figure.
The difference between the direction of magnetic north and that of compass north is called "deviation". Deviation is measured in degrees and is described as "East" (+) or "West" (-).

To determine whether the deviation should be added or subtracted, use the rhyme:

  • “Deviation East - Compass Least“
  • “Deviation West - Compass Best“

According to the figure’s compass deviation card, if flying a magnetic heading of 210°, the compass heading will be 209°.

And since the compass heading is 1° less than the magnetic heading, then the deviation is 1°E.

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