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ATC advises, "traffic 12 o'clock." This advisory is relative to your

A

true course.

B

ground track.✓ Correct Answer

C

magnetic heading.

Explanation

Controllers see only the aircraft's track on the radar display, so traffic given as a clock position is relative to your ground track, not your heading (AIM 4-1-15). If you are crabbing to correct for wind, the traffic will appear offset from the clock position you were given. The advisory is not based on true course or magnetic heading.

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